Answer: A) promotes genetic variability among offspring.
Step-by-step explanation:
Sexual reproduction is the mode of reproduction seen among most of the plants, animals and other organisms. This involves the formation and fusion of the gametes to produce offsprings. It basically requires two parents. The advantage associated with the sexual reproduction is that it increases the chances of appearance of genetic variation. As the genetic material of inheritance is a combination of both of the parents thereby, supports genetic variations. These genetic variations makes the offsprings distinct from their parents and to one another. These genetic variations supports the chances of survival among offpsrings.