Answer:
A. A Refrain
Explanation:
A refrain is the repetition of a line or group of lines throughout a poem.
the answer is indifference on apex
Answer: The race for a vaccine is very important, because we need it to improve forward. (Continue explains about each one)
Explanation: Just write about how important the race to the vaccine is. In this case of both vaccines.Some like what I put above should be good. Suggestions could be searching up the causes and how deadly each one actually was.
