The reason for choosing option (1) "wherever he wanted to go" is that it provides an adverbial clause that describes the manner or direction in which he led the caravan. The adverbial clause "wherever he wanted to go" indicates that he led the caravan to various places as per his desires or preferences. Adverbial clauses modify the verb in a sentence, providing information about when, where, how, or why an action occurred, and in this case, "wherever" specifies the direction or destination.