It's B. The other answers have the pronouns in the Nominative case.
A: terribly: modifies old, an adjective
B: very smart: very modifies smart, an adjective
C; extremely modifies "slow", an adjective again
D: quickly modifies "hid" a verb - this is the correct answer!
Answer:
If Biden is elected, everything would be closed including schools. People will die due to lack of money and jobs (also customers). A virus that has 99% recovery rate below 60
If Trump is elected, No one will be interfered. And everyone will continue their business as usual. Schools & businesses will be open. People will wear masks as they please.
B) false
It's not really good for academic writings <span />