Every adult male woolly monkey is larger than even the largest female

Every adult male woolly monkey is larger than even the largest female woolly monkey. In colonies of woolly monkeys, any adult male will dominate any female.

If the statements above are true, which one of the following must on the basis of them be true of woolly monkeys in colonies?

(A) Size is the primary determinant of relations of dominance among woolly monkeys.- incorrect, As per the stimulus, size and sex influence dominance among woolly monkeys but we can' say for sure whether the size is the primary determinant

(B) Some large adolescent male woolly monkeys dominate some smaller females of the species.- incorrect, the stimulus discusses only about adult males of the species

(C) If a male woolly monkey is larger than a female of the species, that male will dominate that female.- incorrect, we don't know whether male woolly monkey is an adult

(D) If a female woolly monkey dominates a male of the species, the dominated male monkey is not an adult.- Correct; If this is true, the only way a female could dominate a male would be if that male were not an adult.

(E) An adult male woolly monkey can dominate a female of the species only if that female is also an adult.- incorrect; we are told that 'any adult male will dominate any female.'

Answer D

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