Cross pollination is

Answer: Option C

Cross pollination is Allogamy.
Allogamy or cross-fertilization is the fertilization of an ovum from one individual with the spermatozoa of another.
In plants, allogamy is used specifically to mean the use of pollen from one plant to fertilize the flower of another plant and is usually synonymous with the term "cross-fertilization" or "cross-pollination" (outcrossing).