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 the active voice.

The correct answer is D)Let me be not laughed at.

Option D is correct as the subject of the given sentence (you) comes in the place of the object (me) and vice versa, the same tense is used (simple present tense), 'let' is used because the speaker orders the listener to not to laugh at him, and 'be' is used with the past participle of the main verb (laugh).