# very difficult question

#### kralf

##### very difficult question
« on: March 18, 2005, 04:43:22 PM »

prep test 32 section 1 #18

Until 1985 all commercial airlines completely replenished the cabin air in planes in flight once every 30 minutes. Since then the rate has been once every hour. The less frequently cabin air is replenished in a plane in flight, the higher the level of carbon dioxide in that plane and the easier it is for airborne illnesses to be spread.

Q: which one of the follwing is most strongly supported by the information above?

b) People who fly today are more likely to contract airborne illnesses than were people who flew prior to 1985..

e) in 1980 the level of carbon dioxide in the cabin air on a two-hour commercial airline flight
was lower than it is today on a similar flight..(answer)

Why not B is the answer?

I think B is right inference..

#### taterstol

• 478
• Current 1L
##### Re: very difficult question
« Reply #1 on: March 18, 2005, 04:50:53 PM »
"most strongly supported" means relative to the other options. Without the other options it is impossible to explain the answer.

#### GO_PTO

• 890
• my children... I have returned for law school!
##### Re: very difficult question
« Reply #2 on: March 18, 2005, 04:57:53 PM »
maybe there is another more important factor.

say SARS was EVERYWHERE prior to 1985 but is gone now. SO just because airborne illnesses may be easier to transmit on planes now, there are fewer diseases to worry about.

Therefore, people may NOT be more likely to contract airborne illnesses now...

#### kralf

##### Re: very difficult question
« Reply #3 on: March 19, 2005, 02:18:48 PM »

Thanks

#### taterstol

• 478
• Current 1L
##### Re: very difficult question
« Reply #4 on: March 19, 2005, 04:35:00 PM »
bingo. in these questions that are like "what is the most reasonable inference..." you want to make the smallest logical leap possible. Going from lower refresh rate --> more disease is simply a bigger jump than going from lower refresh rate --> more CO2.

#### bloomich

##### Re: very difficult question
« Reply #5 on: March 20, 2005, 12:41:16 AM »

prep test 32 section 1 #18

Until 1985 all commercial airlines completely replenished the cabin air in planes in flight once every 30 minutes. Since then the rate has been once every hour. The less frequently cabin air is replenished in a plane in flight, the higher the level of carbon dioxide in that plane and the easier it is for airborne illnesses to be spread.

Q: which one of the follwing is most strongly supported by the information above?

b) People who fly today are more likely to contract airborne illnesses than were people who flew prior to 1985..

e) in 1980 the level of carbon dioxide in the cabin air on a two-hour commercial airline flight
was lower than it is today on a similar flight..(answer)

Why not B is the answer?

I think B is right inference..

B requires a large leap because "people who fly" can contract airborne illnesses in arenas outside of the airplane, which complicates the whole comparison... whereas choice E is very specific in limiting any extraneous factors... it may be the case that people who happen to ride airplanes today are less likely to contract airborne illness due to advancements in medical treatment, cleaner air outside of airplanes, etc.

#### desmo

• 1721
##### Re: very difficult question
« Reply #6 on: March 20, 2005, 03:45:52 AM »
the questions deals with level of CO2, not airborne illness.  you cannot draw any conclusions about airborne illness and contracting one given the information.  you can only draw conclusions about the level of CO2 before and after 1985.

#### Bubbazzz

• 224
##### Re: very difficult question
« Reply #7 on: March 20, 2005, 07:52:46 PM »
i agree. no info. to suggest anything about illness today. you need other factors to determine this answer. with the info. given, e is the answer because there is no information given as to illnesses today. the info. given supports e.

#### dphxmg

##### Re: very difficult question
« Reply #8 on: March 21, 2005, 01:23:54 AM »
There is a logic leap in b. 'fly' is a broader term than 'commercial airlines'.
What if the people who fly take a military airplanes, or spacecraft, or UFO, or something else.

#### bloomich

##### Re: very difficult question
« Reply #9 on: March 27, 2005, 09:14:20 AM »
the questions deals with level of CO2, not airborne illness.  you cannot draw any conclusions about airborne illness and contracting one given the information.  you can only draw conclusions about the level of CO2 before and after 1985.

no it deals with airborne illness as well in that increased CO2 levels increase easiness by which airborne illness spread... however, if people on the plane are less sick in the first place then there would be less airborne illness to spread... it does deal with the contraction of airborne illness but does not isolate all factors that may cause it to spread...