We know that determinist biologists are concerned with phenomenon that can be explained by universal laws which precludes any kind of historical contingency. So we are looking for an answer choice that is consistent with the determinist biologist viewpoint.
(A) "historical chance" Absolutely not. The determinist biologist disdains historical chance (contingency). This is not what the determinist biologist believes at all.
(E) This is the correct, and is completely supported by the passage in lines 42-50.