He disproportionately high appearance of polydactylism among the amish suggests that a. it is a common mutation

nope its not A (if that what you were trying to say)

He disproportionately high appearance of polyactylism among the Amish suggests that it was over represented in the gene pool of the original Amish settlers.

it is c

Explanation:

yes it is weird but true

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds