Correct option is D
Option (d) "get by to him" contains the grammatical error. The phrase "get by to him" is incorrect; the intended expression likely meant to convey reaching out or getting through to him, which should be phrased as "get through to him" if the intention is to communicate effectively or make one's point understood.
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Grammatical rule used: "Get through to" is the correct phrasal verb for successfully making contact or communicating clearly with someone.
Example: Despite the noise, I tried to get through to him about the urgency of the situation.