Correct Answer: The students say that we wish we do not write exams.

Solution : The correct choice is the fourth option.

Narration Conversion:

• Said remains unchanged.
• The first-person pronoun (we) changes to the third-person pronoun (they) .
• The verb "wish" is in its past tense form, "wished".
• The contraction "didn't" (did not) is used instead of "don't" to maintain the past tense in the reported statement.
• The connector "that" is used to introduce the reported clause.

Therefore, the correct answer is: "The students said that they wished they didn't have to write exams."