Vocabulary—Antonyms MCQ: Identify the best antonym of ‘‘PERENNIAL’’ by contrasting something that lasts or recurs perpetually with something infrequent or rare.

Given data

• Perennial: enduring, lasting for a long time, or recurring continually.
• Choices: Frequent, Regular, Lasting, Rare

Concept/Approach
We require a choice that negates enduring or continual occurrence. Among the options, ‘‘rare’’ most clearly expresses infrequency.

Option-by-option analysis
Frequent/Regular: reinforce recurrence, not opposite. ❌Lasting: synonymic to enduring; not opposite. ❌Rare: infrequent, occurring seldom—best antonym here. ✅

Note
While ‘‘perennial’’ can also mean ‘‘everlasting’’, within the given set, ‘‘rare’’ most directly counters the sense of continual or frequent occurrence.

Final Answer
Rare