<span>The word "closely" functions as an adverb in the sentence "Daily watering keeps Sheila's plant healthy and she watches closely for early signs of disease" closely (adverb): closely (comparative more closely, superlative most closely) Thank you for posting your question here at brainly. I hope the answer helps. </span>
1. The adverb that modifies the verb is c) ever. Without it, it wouldn't be completely clear as to which time frame the speaker refers to. It may have been for example the last year, or in some other particular moment.
2. The adverb that modifies the verb is b) always. It adds to the sense of urgency of wearing a life jacket when rafting. Without it, the meaning of this sentence wouldn't be so precise.
