Why is the plan to evacuate the town carried out by Hungarian police rather than the German army? A. The town leaders had requested the police rather than the army.
B. The army did not know about the evacuations. C. Only two Gestapo officers were there, which would not be enough.
D. It would cause less panic among the townspeople.​

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.

the words “strangest” and “unusual” suggest that the narrator is about to tell the story of an odd or puzzling group of people.