The correct option is D She tells him that she did not want to see him. He asks why she is saying like that.
Direct speech is a sentence in which the actual words of the speaker are quoted.
Indirect speech is a sentence in where we report what someone said, without quoting his exact words.
If the reporting verb is in the Present Tense, the tense of the verb in the reported speech remains unchanged.
Here, option D is correct. Reporting verbs like 'says to' and 'asks' are in present tense, so tense in reported speech doesn't change. 'This' changes to 'that' and pronoun changes accordingly.
In option A tense is changed. So, it is incorrect.
In option B tense of reporting verb is changed. So, it is incorrect.
In option C pronoun is not changed. So, it is incorrect.