Select the most appropriate indirect form of the given sentence.

David said, “Don’t worry Frank. I will bring you up to date when I meet you next.”

David told Frank not to worry as he would bring him up to date when he met him next.

The most appropriate indirect form of the given sentence is David told Frank not to worry as he would bring him up to date when he met him next.

The other options are incorrect:

• David told Frank he shouldn’t worry as he will bring him up to date when he meets him next. This is incorrect because the tense of the reported speech should be "would" to match the past tense.
• David told Frank not to worry as I would bring you up to date when I meet you next. This is incorrect because the pronoun "I" should be "he" to match the speaker.
• David told Frank don’t worry as he would bring you up to date when he met him next. This is incorrect because the imperative mood should be changed to the infinitive mood when changing direct speech to indirect speech.