The monsoon word is a conversion of-

Option (a) is correct because the monsoon word is a conversion of Mausim. Mausim is an Arabic word which means weather or season.

Option (b) is not correct because Monish is the other name of lord Krishna.

Option (c) is not correct because Manas is a Sanskrit term which means sensory or processing mind.

Option (d) is not correct because monsoon word is conversion of Mausim not the conversion of Monish and Manas so all of these will not be correct answer.