Why Is Speciation by Polyploidy More Likely in Plants Than

Why is speciation by polyploidy more likely in plants than in animals?

A) Plant gametes can be produced from somatic cells that have undergone many rounds of mitosis.
B) Plant gametes lack postzygotic isolating mechanisms.
C) Plants are sessile and,therefore,are never prezygotically isolated to ensure reproduction.
D) Plants are sessile and cannot speciate via dispersal.
E) Plants lack the DNA repair enzymes that animals have.