The term "evolution" is best described as A) a process of change in a population through time B) a process by which organisms become extinct C) the reproductive isolation of members of certain species D) the replacement of one community by another​

A) a process of change in a population through time

Explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.