The maximum size of a cell is limited by: a) its need for enough surface area for exchange with its environmentb) the number of organelles that can be packed insidec) the materials needed to build itd) the amount of flexibility it needs to be able to move e) the amount of food it needs to survive

The answer is :

a) its need for enough surface area for exchange with its environment.

the answer is false?

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).