Final answer:
Option 2, 'I told him I saw the movie already, but he said he wanted to watch it again.' best expresses the message. Correct tense usage leads to clear communication in English.
Step-by-step explanation:
In English grammar, it's important to use proper tenses, especially when communicating past events. Among the sentences given, Option 2: 'I told him I saw the movie already, but he said he wanted to watch it again.' is the sentence that expresses the message clearly. Tense consistency, which is context-appropriate use of past, present, and future tenses, is the key to clear communication in English. It's immediately clear in the sentence that both events happened in the past.
Learn more about Tense Consistency