Topic: Dangling Modifer,

Best Answer Explained in Below-:

The correct answer is B) "the woman began," because it correctly structures the sentence to convey the intended meaning regarding the woman's mental capacity. In English grammar, the phrase following "when" typically requires a subject and a verb, forming a clause that indicates a specific time or event.

Option A, "did the woman to begin," is grammatically incorrect as it incorrectly places the auxiliary verb "did" in a question format, which disrupts the sentence's structure. Option C, "began the woman," also presents a reversed subject-verb order that is not suitable for a declarative clause. Lastly, option D, "the woman was begun," suggests a passive construction implying someone started the woman, which is illogical in this context since it pertains to her mental capacity.

In contrast, option B clearly states "the woman began," providing a straightforward subject-verb combination that effectively communicates when the woman started exhibiting changes in her mental capacity, making it the most coherent and grammatically correct choice.