Correct Answer: He said that those dresses were cheap.

Solution : The fourth option is correct.

Narration Conversion:

• He said is used as the main clause to refer to the words the speaker said.
• That is used to connect the main clause to the relative clause.
• Those is the correct pronoun that is used to refer to the dresses being talked about.
• Are is changed to were , as the sentence is in indirect form (simple present tense is changed to simple past tense).

Therefore, the correct sentence is: " He said that those dresses were cheap. "