The chance of elimination of genes from a small population is an example of

Prodigality of reproduction in Darwinism refers to:

Which one of the following is a cause of sympatric speciation?

Given below are two statements regarding evolution.
$Statement-I$: Selection against harmful mutation leads to a mutation balance.
$Statement-II$: In mutation balance, the allele frequency of harmful recessives keep on changing generation after generation.
In the light of above statements, choose the most appropriate answer from the options given below:

Which characteristic is responsible for an organism to survive in the environment,enable reproduction,and maintain genetic stability?

Which organisms are considered the most adapted in the environment?