Change the following sentence into passive voice.
Santa Claus brought many gifts last year.
An action in a sentence can be represented in two ways, namely active and passive voice.
The passive voice always uses the past participle form of the main verb irrespective of any tense. Only the auxiliary verbs depend upon the sentence given in active voice.
The given sentence is in the active voice.
The correct answer is B)Many gifts were brought by Santa Claus last year.
Option B) is correct as the subject of the given sentence comes in the place of the object and vice versa. Also, the main verb is used in the third form.
Options A, C, and D are not correct as the sentence structure is wrong, the tense used is wrong and two options are wrong respectively.