Answer:
I believe the answer is B
Explanation:
I believe its b this is because it would make since that she is battling the flu so she is in agony that shes battling the flu and missing her concert.
Yearly is the adverb.
An adverb is a word that modifies verbs, adjectives and other adverbs. In this case "yearly" is modifying "migrate" which is a verb.
Kills all viruses and bacteria except their spores: high
kills most types of bacteria and viruses: intermediate
kills fewer types of batteries and viruses: low
