According to the passage, the most effective tool of persuasion is
A. ethos, because you cannot persuade
an audience that does not trust you
B. logos, because it can also be used to
build ethos
C. pathos, because human beings are
most easily persuaded by emotion
D. a combination of ethos, pathos, and
logos

covert: hidden or secret

candid: truthful and straightforward

what i get from these phrases is covert means undercover or underground and that's where the flower is in april. on the other hand, may is the month where flowers start to bloom and thats the reason why candid is being used as a word to describe the blossoming period of a flower.

hope this answer you.