Select the correct indirect form of the given sentence. Lee said to his wife, “I am very happy today.”

Lee told his wife that he was very happy that day.

The correct indirect form of the given sentence is:

Lee told his wife that he was very happy that day.

The other options are incorrect:

• Lee told his wife he was very happy today. - This is incorrect because the pronoun "he" is in the nominative case, but it should be in the accusative case in this context.
• Lee told his wife that he has been very happy that day. - This is incorrect because the verb "has been" in the reported speech is in the present perfect tense, but the reporting verb "said" is in the past tense.