Choose from the options lettered A - E the one that most appropriately completes the sentence The activities…

Analyze the question

You need a particle that combines with "rounded" to form a phrasal verb meaning "ended or concluded." The sentence says the golden jubilee activities were rounded ____ with a party.

Explain the concept

Phrasal verbs with "round":

• round off = to finish or complete something in a satisfying way, often with a final event or action ("We rounded off the meal with coffee.")
• round up = to gather people, animals, or things together; also to raise a number to the nearest whole ("The police rounded up the suspects.")
• round over, round through, round in = not standard English phrasal verbs.

Step-by-step solution

1. The sentence is about the end of the celebration activities, which were concluded "with a party."
2. "Rounded off with" is a common collocation meaning "ended with."
3. Check the others: • Rounded up: would mean gathered together, which does not fit the idea of concluding. • Rounded over / through / in: not idiomatic.
4. The correct sentence is: "The activities marking the golden jubilee celebration of the club were rounded off with a party."

Answer: A. off

Tip: "Round off" = "finish nicely." Think of rounding off a rough edge to make it smooth and complete. "Round up" = "gather" or "collect." In exams, whenever you see "ended with" in meaning, think rounded off with.