For a long time, Monterey beach authorities have had an active feeding program for the otters of Monterey bay. Many otters get as much as half of their daily food requirement each day from the fish and other nourishments that the beach authorities provide. However, the life expectancy of Monterey bay otters has become considerably less than that of wild otters.

Which of the following, if true, most helps to explain this discrepancy?

(A) The fish and nourishments provided by Monterey beach authorities have not been tested by a central animal health authority.
(B) There has been an increase in recent years in the number of sharks in and around Monterey bay.
(C) The survival instincts and skills of Monterey bay otters have decreased as a result of their dependence on human feeding.
(D) Monterey bay otters have become overly friendly with humans because of their interaction with the beach authorities.
(E) The fish given to the otters at the beach are the same types of fish that otters typically catch in the wild.

source - CrackVerbal
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+1 for C
option C explains the paradox stated in the argument.
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