This question is in GMATPrep. The OA is C.

Hyp1: The Tiger beetles can not maintain their pace (they are tired) so that can not catch the insect
Hyp2: The Tiger beetles are unable to process the resulting rapidly changing visual information ==> Need pause to recover eyes' ability.

C says that after the pause, Tiger beetles gain speed to catch the insect. C is best.

Please, could you provide how you reached your answer? Particularly, how you undermined the other conclusion? Thank you.

-----------------------------------------------------------------------------------------

Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, a tiger beetle will intermittently stop and then, a moment later, resume its attack. Perhaps the beetles cannot maintain their pace and must pause for a moment’s rest; but an alternative hypothesis is that while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly go blind and stop.

Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?

A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately stops and runs away without its usual intermittent stopping.-> here this will undermine both -> no stopping and moving away
B) In pursuing a swerving insect, a beetle alters its course while running and its pauses become more frequent as the chase progresses. -> this supports both hence cant say whether it goes blind or to pick up speed it pauses
C) In pursuing a moving insect, a beetle usually responds immediately to changes in the insect’s direction, and it pauses equally frequently whether the chase is up or down an incline. ->

THIS APT since when the insect changes direction and the beetle pauses frequently both in upward incline and downward incline !!!
the pauses is same which does not mean to control speed since ireespective of slope hence only reason is that it goes blind....

D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit. -> OOS

E) The faster a beetle pursues an insect fleeing directly away from it, the more frequently the beetle stops. -> this supports both since the insect moves away ,the reason may be it wants to pick up speed or it must be the insect goes blind

Please, could you provide how you reached your answer? Particularly, how you undermined the other conclusion? Thank you.

-----------------------------------------------------------------------------------------

Tiger beetles are such fast runners that they can capture virtually any nonflying insect. However, when running toward an insect, a tiger beetle will intermittently stop and then, a moment later, resume its attack. Perhaps the beetles cannot maintain their pace and must pause for a moment’s rest; but an alternative hypothesis is that while running, tiger beetles are unable to adequately process the resulting rapidly changing visual information and so quickly go blind and stop.

Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?

A) When a prey insect is moved directly toward a beetle that has been chasing it, the beetle immediately stops and runs away without its usual intermittent stopping.
B) In pursuing a swerving insect, a beetle alters its course while running and its pauses become more frequent as the chase progresses.
C) In pursuing a moving insect, a beetle usually responds immediately to changes in the insect’s direction, and it pauses equally frequently whether the chase is up or down an incline.
D) If, when a beetle pauses, it has not gained on the insect it is pursuing, the beetle generally ends its pursuit.
E) The faster a beetle pursues an insect fleeing directly away from it, the more frequently the beetle stops.