Choose the correct alternative which will improve the part of the sentence given in quotes.
Both Santhosh and Rohit have 167 English papers due 'in' Tuesday.

Correct option is C

The correct substitution of the quoted words is "on".
Explanation: "In Tuesday" is incorrect because "in" is generally used for unspecific times during a day, month, season, year, or century. When referring to specific days of the week, the correct preposition is "on". This correction aligns with standard English usage for indicating events on specific days.
Grammatical rule used: The preposition "on" is used with days of the week to indicate specific occurrences.
Example: We will meet on Monday to discuss the project.