I'd put a comma after "developed" but that's not a choice, huh? =)
I agree with you on B.
Actually, the correct answer is B) "This is a well-developed white female." In this sentence, there should be a hyphen (-) between "well" and "developed" because they are being used together to modify the word "female." Hyphens are used to link compound words or phrases that act as a single adjective before a noun, like "well-developed." Without the hyphen, the sentence would not be correctly punctuated.