Sentence Correction (SC) | QOTD: Nobody knows exactly how many languages there

HiGMATNinja

I have a query regardingthey vsthem after viewing your youtube video for pronouns.

In the video, here is sample sentence:
Whenever I go to the post office,they overcharge me for stamps.
Here, you discarded the sentence sincethey should ideally refers to plural
antecedent iepeople at post office,but there is no mention ofpeople in sentence.

Using similar logic in this OG, why did you keep (A) as acceptable in spite of nopeople being
mentioned anywhere. Ifthose can be understood
...

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