A certain type of insect trap uses a scented lure to attract rose beetles into a plastic bag from which it is difficult for them to escape. If several of these traps are installed in a backyard garden, the number of rose beetles in the garden will be greatly reduced. If only one trap is installed, however, the number of rose beetles in the garden will actually increase.
Which one of the following, if true, most helps to resolve the apparent discrepancy?
(A) The scent of a single trap’s lure usually cannot be detected throughout a backyard garden by rose beetles.
(B) Several traps are better able to catch a large number of rose beetles than is one trap alone, since any rose beetles that evade one trap are likely to encounter another trap if there are several traps in the garden. - WRONG. It is like C only. Not helpful.
(C) When there are several traps in a garden, they each capture fewer rose beetles than any single trap would if it were the only trap in the garden. - WRONG. Cetainly possible but it doesn't explain why there is an increase in number of beetles when only one trap is installed.
(D) The presence of any traps in a backyard garden will attract more rose beetles than one trap can catch, but several traps will not attract significantly more rose beetles to a garden than one trap will.
(E) When there is only one trap in the garden, the plastic bag quickly becomes filled to capacity, allowing some rose beetles to escape.
Three choices look to be somewhat good enough - A, D and E.
In A, not able to detect does not mean there is an increase in number of beetle.
In E, escaping of beetles does not mean there is an increase in number of beetle.
A and E one or the other way are same in their approach and logic.
Answer D.
_________________
Pain + Reflection = Progress | Ray Dalio
Good Books to read prior to MBA