Question

How many _____ do you have, Mr. Mehta? * (a) brother (b) brother-in-law (c) brothers-in-law​

Answer 1

Answer:

How many brother do you have Mr. Mehta?

Answer 2

Question

How many __ do you have. Mr. Mehta ?

Answer

$\implies$Brothers

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Learn More

'Many' is used when we are speaking about a plural noun. When we speak about 'many' and 'much', it's worth mentioning countable and uncountable nouns. Countable nouns can be used with a number and have singular and plural forms. Uncountable nouns can only be used in singular and cannot be used with a number.

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( Note - May be you didn't wrote one option that is brothers because the correct answer of ur question is brothers.)