While Giving Her Speech on Nearsightedness, Meredith Says, "In the Journal

While giving her speech on nearsightedness, Meredith says, "In the Journal of Clinical Neuroscience, neurosurgeon Noel Dan argues that the impressionist artists, Monet, Cezanne, Renoir, and Degas, may have suffered from nearsightedness because, 'They were looking at things slightly blurred and Impressionism does, in a sense, flow on from this.'" Meredith added credibility to her presentation by using a (n) _____ within her speech.

A) simile
B) analogy
C) authoritative opinion
D) definition