Which of the following results in the least variation among offspring?

Asexual reproduction (cloning) results in the least variation among offspring because it involves the production of genetically identical individuals. In this process, a single parent passes on its exact genetic material to its offspring, resulting in minimal or no genetic variation. On the other hand, sexual reproduction involves the combination of genetic material from two parents, leading to genetic recombination and increased variation among offspring. Mutation and recombination of genetic material can introduce new genetic variations, further increasing the variation among offspring.