Read the following pairs: Active Voice Passive Voice They laughed at his warnings and objected to all his proposals. His warnings were laughed at and his proposals were objected to. Do not insult the weak. You are advised to not insult the weak. Select the pair(s) wherein the Passive Voice is correctly stated.

Step-by-step solution

In the first pair, the active voice contains prepositional verbs, laughed at and objected to. When converting such sentences to the passive voice, the prepositions must remain attached to the verbs. The given passive sentence correctly retains these prepositions. Thus, the first pair represents a correct transformation. In the second pair, the active voice is an imperative sentence in the negative form. When converting a negative imperative sentence to the passive voice using introductory verbs like advised, the st