Let’s understand how to convert direct speech to indirect speech. Direct: He said, "I go to park every day."
Reporting verb: "said" — this is in the past tense.
Reported speech: "I go to park every day" — simple present tense.
When converting direct speech to indirect speech and the reporting verb is in the past tense ("said"), the tense of the reported speech must also change:
- Present simple (go) $\rightarrow$ Past simple (went)
Also, "I" becomes "he" (to match the subject of the reporting verb).
So the sentence becomes:
"He said that he went to park every day."
Why others are incorrect:
- Option A: "He says..." – changes the reporting verb tense (not correct).
- Option B: "may go" – modal verb use is incorrect here.
- Option C: "had gone" – changes it to past perfect, which is too advanced and inaccurate for this structure.