The "bottom line" is that students make a final decision or an outcome....The students themselves decide which they are going to choose, and what they choose will be the final outcome.
The best answer would be D
Dr. Ronald Shaw, HER COLLEAGUE, concurs with the theory of a black hole at the galactic center of the milky way. The appositive phrase in this sentence is "her colleague" and this refers to the noun "Dr. Ronald Shaw". An appositive phrase consists of words that serves as an additional information about the noun it describes. Usually, appositive phrases are enclosed with a pair of commas.
She wore a red flower in her hair
