Answer:
it makes the sentence much more vivid and powerful.
Explanation:
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.
Answer:
A 2013 preliminary study at UCLA on the effect of antioxidants found in pomegranates on memory.
Explanation:
The rest of the sources are either not credible in terms of research such as the magazine article and the trainer. The advertisement has bias when providing information making the study the best choice.