Read the text and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Although scientists observe that an organism’s actions fall into rhythmic patterns, they disagree not quite how these patterns are affected once the organism is transported to a supplementary setting. One experimenter, Brown, brought oysters from Connecticut waters to Illinois waters. She noted that the oysters initially opened their missiles widest as soon as then it was high tide in Connecticut, but that after fourteen days their rhythms had adapted to the tide schedule in Illinois. Although she could not posit an unequivocal causal relationship along in the midst of behavior and environmental alter, Brown concluded that a regulate in tide schedule is one of several realizable exogenous influences (those uncovered the organism) as regards the oysters’ rhythms. Another experimenter, Hamner, however, discovered that hamsters from California desist their indigenous rhythms even at the South Pole. He concluded that endogenous influences (those inside the organism) seem to comport yourself with an organism’s rhythmic behavior.

Q.All of the following could be considered examples of exogenous influences on an organism EXCEPT for the influence of the __ shedding of its future?

(A) level of a hormone on a field mouse’s readiness for mating
(B) the temperature of a region on a bear’s hibernation
(C) salt level of a river on a fish’s migration
(D) the humidity of an area on a cat’s

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