OG详解-OG9 文法 Q5

Choice C is the best answer. The convention being tested is the use of punctuation between titles and proper nouns. No punctuation is needed to offset the proper noun “Yuree Lee” from the title “plant cell biologist” that describes Lee. 
Choice A is incorrect because no punctuation is needed. Choice B is incorrect because no punctuation is needed. Choice D is incorrect because no punctuation is needed around the proper noun “Yuree Lee.” Setting the phrase off with punctuation suggests that it could be removed without affecting the coherence of the sentence, which isn’t the case.