His talk on heritage sites has picked up my interest.
Solution
✅ Correct Option: 1
This question tests phrasal verb synonyms and idiomatic expressions. When something "picks up" your interest, it awakens or stimulates curiosity that wasn't there before—like how a good book picks up steam as the plot thickens. We need the most precise synonym for this meaning. Option 1 → Perfect match! "Aroused interest" is the classic expression for awakening curiosity. Option 2 → Wrong fit—you adopt pets or policies, not interest levels. Option 3 → Close but not quite—"caught" suggests grabbing existing attention, not creating it. Option 4 → Doesn't work—you brighten rooms or moods, not interest itself.
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