Question : Select the most appropriate option that can substitute the underlined segment in the given sentence.
Amar is very good in mathematics.
Option 1: good at
Option 2: good about
Option 3: good on
Option 4: good with
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Correct Answer: good at
Solution : The first option is the correct answer.
The reason for this choice is that when describing proficiency or skill in a particular subject, the preposition "at" is commonly used. So, "good at" is the correct phrasing when expressing someone's proficiency in a specific academic subject like mathematics.
Therefore, the correct sentence is: "Amar is very good at mathematics."
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