The correct answer is B. Dr. Robert Garcia.
Given that this entire excerpt is written based on this author's study, it would be best to hyperlink his name so as to go to his study and check the original source of information. Placing it elsewhere wouldn't really make any sense at all.
<u><em>B</em></u> would be the most reasonable answer :)
B. Compound predicate nominative, A. Simple subject, D. gerund phrase