Asexual reproduction is a type of reproduction that does not involve the fusion of two gametes. Since this reproduction does not involve the fussion of two different cells there is no genetic mingle and the resulting organisms are genetically identical to the parent.
Prokaryotes are unicellular organisms that reproduce by mitosis, which is a form of asexual reproduction. So, for this organisms, the individuals are genetically identical.
Sexual reproduction involves the fusion of two gametes of two individuals, the resulting offspring is produced by the combination of the genetic information of both parents. This type of reproduction generates individuals that are genetically different than its parents. During meiosis, occurs genetic recombination, which after many generations, leads to the change and evolution of the species.
Eukaryotic organisms reproduce by this method. This means that these organismsn are more likely to evolve complex structures over the millions of years.
The correct option is A.