OG详解-OG5 文法 Q6

Choice B is the best answer. The convention being tested is the use of punctuation between titles and proper nouns. No punctuation is needed to set off the proper noun “Marie-Denise Villers” from the title that describes Villers, “littleknown French portrait artist.”
Choice A is incorrect because no punctuation is needed. Choice C is incorrect because no punctuation is needed. Choice D is incorrect because no punctuation is needed.