Northern elephant seals were hunted to the point that their population size was reduced to few as 20 in the late 1800s since then, their populations have rebounded to over 30,000. however, the genetic diversity is significantly reduced in the rebounded population of elephant sealsexplains this lack of genetic diversity in a population of 30,000

The correct option is C.

Explanation:

Population bottleneck can be described as a wide reduction in the species of a population due to environmental factors or human activities. In the above scenario, population bottleneck occurred in the Northern elephant seals due to which their population reduced to just 20.

When a population of 30,000 was raised from just those 20 elephants, genetic drift occurred due to lack of variety. This caused the genetic diversity to reduce even in the population of 30,000.

thinking it would be physical characteristics

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: