The following sentence has been divided into parts. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any Error, mark ‘No error’ as your answer.
Rakesh, a fourth-class student, / is a tallest / of all the students in the school.

Correct option is D

Option (d) contains an error.
· Incorrect phrase: “is a tallest”
· "Tallest" is a superlative adjective, so it should not be preceded by the indefinite article ‘a’. Instead, it should be used with a definite article or without one, depending on structure.
· Correct usage: "is the tallest"
· Corrected sentence: "Rakesh, a fourth-class student, is the tallest of all the students in the school."
Grammatical rule used:
Superlative adjectives are preceded by “the,” not “a.”
Example: She is the best player in the team, not a best player.
Information Booster:
Superlatives describe the highest degree and are usually followed by “of all/in the group,” hence always used with “the.”