Correct Answer: She said that she was in no mood to work then.

Solution : The correct choice is the third option.

Indirect speech, also known as reported speech or indirect discourse, is a way of reporting what someone else has said without quoting their exact words.

The steps of conversion are as follows:

• There would be no change in the reporting verb.
• The first-person pronoun "I" is changed to the third-person pronoun "she".
• The connector "that" is used to introduce the reported clause.
• The present tense "am" is changed to the past tense "was".
• The time reference "now" is changed to "then".

Therefore, the correct sentence is: She said that she was in no mood to work then .