Final answer:
The correct pronoun to use in the sentence 'He want to go to the movies' is 'He,' but the verb 'want' should also be corrected to 'wants' for proper subject-verb agreement. Therefore, the fully corrected sentence is 'He wants to go to the movies.'
Step-by-step explanation:
The sentence 'He want to go to the movies.' is incorrect because the conjugation of the verb 'want' does not match the subject pronoun 'He.' The correct subject pronoun that should be used to correct the sentence is 'He' as it is already appropriately singular and masculine to match the subject of the verb. However, the verb 'want' must also be corrected to agree with the singular third-person subject pronoun, so the correct sentence should read 'He wants to go to the movies.'
In English grammar, subjective case pronouns such as I, we, you, he, she, it, they, and who function as the subjects of verbs and need to be in agreement with the verb in number and person. The choice between pronouns like him, his, or they would not be appropriate for this sentence, as 'him' and 'his' are objective and possessive case pronouns, respectively, and 'they' is a plural pronoun that does not agree in number with the singular verb 'wants.' Therefore, the correct answer to choose from the options is 'c) He.'