In the following question, a sentence has been given in the Active/Passive voice. Out of the four alternatives suggested, select the option which best expresses the same sentence in the Passive voice: She laughed at the antics of the jester.

Introduction / Context:
In this question you must transform a sentence containing a prepositional verb ("laugh at") from Active voice to Passive voice. The given active sentence is: "She laughed at the antics of the jester." The difficulty here is that the preposition "at" must be retained correctly in the Passive form.

Given Data / Assumptions:

• Active sentence: She laughed at the antics of the jester.
• Verb-preposition combination: "laughed at."
• Object of the preposition: "the antics of the jester."
• Tense: simple past ("laughed").
• The subject "She" becomes the agent in the Passive sentence.

Concept / Approach:
When a verb is used with a preposition, and we form the Passive, the preposition normally remains attached to the verb phrase. The object of the preposition becomes the subject in the Passive clause. The structure is: object of preposition + "was/were" + past participle + preposition + "by" + subject. Thus, "the antics of the jester" become the subject, followed by "were laughed at by her."

Step-by-Step Solution:
Step 1: Identify the prepositional object: "the antics of the jester." Step 2: Make it the subject of the Passive sentence: "The antics of the jester ..." Step 3: Use simple past passive "were laughed" (for plural "antics"). Step 4: Keep the preposition "at" with the verb: "were laughed at ..." Step 5: Add the agent: "... by her." Step 6: Final sentence: "The antics of the jester were laughed at by her."

Verification / Alternative check:
Convert "The antics of the jester were laughed at by her" back to Active voice. You get: "She laughed at the antics of the jester." The tense, subject, object, and preposition all match the original sentence. That confirms the correctness of option C.

Why Other Options Are Wrong:
Option A: "Laughing at the antics of the jester was done by her" is an awkward nominal construction and uses "was done," which is not required in a standard Passive transformation. Option B: "She herself laughs..." remains in Active voice and even changes the tense to simple present, so it does not fulfil the transformation requirement. Option D: "Her laughter was to the antics..." is not idiomatic English. We do not normally say "laughter was to" something; we say "laughed at" something.

Common Pitfalls:
A common mistake in such questions is to drop or misplace the preposition when forming the Passive. Candidates sometimes write "The antics of the jester were laughed by her," which is incorrect because "laugh" in this sense must be followed by "at." Always remember to keep the preposition attached to the verb in Passive constructions when the verb takes a prepositional object.

Final Answer:
The correct Passive voice sentence is: "The antics of the jester were laughed at by her."