(1) is incorrect because an object follows the verb whereas in the given sentence, the words 'to complain' precede the verb.
(3) is incorrect because a complement follows the verb whereas in the given sentence, the words 'to complain' precede the verb.
(4) is incorrect because a preposition usually comes after the verb or it precedes a noun or an object whereas in the given sentence, the words “to complain” precede the verb.