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Burying beetles do whatever they can to minimize the
size of their competitorsтАЩ broods without adversely
affecting their own. This is why they routinely destroy
each otherтАЩs eggs when two or more beetles inhabit the
same breeding location. Yet, after the eggs hatch, the
adults treat all of the larvae equally, sharing in the care
of the entire population.
Which one of the following, if true, most helps to
explain burying beetlesтАЩ apparently contradictory
behavior?
(A) Burying beetles whose eggs hatch before their
competitorsтАЩ are more likely to have large
broods than are burying beetles whose eggs
hatch later.
(B) The cooperation among adult burying beetles
ensures that the greatest possible number of
larvae survive.
(C) Burying beetles are unable to discriminate
between their own larvae and the larvae of
other burying beetles.
(D) Many of the natural enemies of burying beetles
can be repelled only if burying beetles
cooperate in defending the breeding site.
(E) Most breeding sites for burying beetles can
accommodate only a limited number of larvae.
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C explains the discrepency. The beetles cannot tell their own young apart form their competing brood`s young. If they could, they would probably destroy them.
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