Pollination of a flower or plant with pollen from a different flower or plant is known as​

Cross-pollination

Explanation:

cross-pollination is when pollen from one plant gets transported to another plant.

self-pollination is when pollen gets transported from the anther to the stigma of the same flower or a different flower on the same plant.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.