A popular beach has long had a dolphin feeding program in

[BTGmoderatorDC]

A popular beach has long had a dolphin feeding program in which fish are given to dolphins several times a day; many dolphins get as much as half of their food each day there. Although dolphins that first benefit from the program as adults are healthy and long-lived, their offspring have a lower life expectancy than offspring of dolphins that feed exclusively in the wild. Which of the following, if true, most helps to explain the lower life expectancy of offspring of dolphins feeding at the beach compared to other young dolphins?

A. Sharks that prey on dolphins are less common in the open seas off the beach than in many other areas of the open seas where dolphins congregate.
B. Many of the adult dolphins that feed at the beach are females that nurse their offspring there.
C. The fish given to the dolphins at the beach are the same types of fish that dolphins typically catch in the wild.
D. Many dolphins that feed at the beach with their offspring come to the beach only a few times a month.
E. Adult dolphins that feed at the beach spend much less time teaching their offspring how to catch fish in the wild than do other adult dolphins.

OA E

Source: GMAT Prep

[deloitte247]

Option A:- Incorrect
This option is typically inverse of the explanation. They would have longer life expectancy not shorter.

Option B:- Incorrect
The option contains error and it only gives the opposite of the explanation. Quite similar to the error in option A.

Option C:- Incorrect
The pinpoint difference needs to be established and this is lacking in this option. does not give a valid point.

Option D:- Incorrect
A difference has to be established, and this option suffers grammatical errors, syntax and parallelism.

Option E:- correct
The possible ways may not be far fetched this may be why they are not healthy and have lower life expectancy, because they are only dependent on the HALF of their diet on the food provided through the feeding program. For another half they have to make effort. Remember that if they don't know how to get the food the live expectancy will decline.