How to mark someone brainlist

when two people has answered your question you will see a crown on your answer and then you select the answer that is right

Explanation:

if your question get two answers then down of both the answers option is there to make as brainlist

hope this helps you please make me brainlist

the answer is c.) there is a warm front in region a and a stationary front in region b.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).