Each of the students in the computer class/ has to type/ their own research paper this semester.

Each of the students in the computer class
has to type
their own research paper this semester
No Error

The correct answer is: D. No Error

The sentence is grammatically correct. The subject “each of the students in the computer class” agrees with the verb “has to type” in number. The object “their own research paper” is also correct, as it is a pronoun that refers back to the plural subject.

The other options are incorrect for the following reasons:

  • Option A: The word “the” is not necessary before the noun “computer class.”
  • Option B: The word “to” is not necessary before the verb “type.”
  • Option C: The word “own” is not necessary before the noun “research paper.”