Which graph represents selection that may lead to reduced variation in a population?

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.