abrakadabra21 wrote:
E doesn't address this:Meerkats on guard duty do not face a greater risk of being killed
(E)When meerkats stand guard, they forego opportunities to forage for food even though others in the group may not share food withthem.
so even though they let go opportunity to eat but they are driven by the motive that they won't be killed. Food vs. life - they are choosing life and there is the selfish reason.
(B)The degree to which an activity may lead to immediate death is not the only determinant of altruism.
while gives attack the definition of altruism. so it say, well OK, they are safe but that's not the criteria to define altruism. I think B is a better choice.
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