 
 <translate> Bottleneck effect occurs when a population suddenly gets much smaller. Effects of bottlenecks are unpredictable . When a population suddenly gets much smaller the effects are unpredictable.
So, the final answer is (E). <ibo> Nsogbu a na-apụta ma ọ bụrụ na ọnụ ọgụgụ ndị bi n'otu ebe ebe belata n'otu ntabi anya. A pụghị ịkọwa ihe ndị na - esi n"ịkwụsị ọrụ apụta. Mgbe ọnụ ọgụgụ ndị bi n'ebe ahụ ji nwayọọ nwayọọ na-ebelata, a pụghị ikwu ihe ga-esi na ya pụta. Ya mere, azịza ikpeazụ bụ (E). 