Why does sexual reproduction result in more genetic variation in a species apex?

Sexual reproduction involves the formation of offspring with the help of two parents ( a male and a female). Genetic variation occurs in case of sexually reproducing organisms as gene variants ( alleles) in reproductive cells ( gametes) are segregated and randomly fused during fertilization.

Genes also undergo genetic recombination (during crossing over in homologous chromosomes ) during meiosis ( particularly in Pachytene stage of Prophase 1).

As a result, when sex cells ( gametes such as eggs and sperms) randomly combine during fertilization to produce offspring, there is an increase in genetic variation.

Thus, sexual reproduction result in more genetic variation in a species apex.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

i believe the answer would be b. hope it : )