PT46, S2(LR), Q7

[mantra]

Insects, instincts, behavior, brain size.

My answer: (E) "Only organisms with brains of insect size or smaller engage in purely instinctual behavior."

Credited answer: (B) "Insect behavior is exclusively instinctual."


The credited answer seems much more restrictive.  It's an absolute, which I read no grounds for in the argument.

The argument never cites a binary for behaviors (i.e. instinctual/flexible), so why is it necessary that insect brain size < required size for flexible behavior ----> insect behavior = pure instinct?

I felt the more qualified statement in (E) was appropriate.  Please advise.

[johnmarty]

can you post the whole stimulus?

[mantra]

not per "THE RULES" sticky at the top of the forums