7) Which event occurred before Addams and Starr opened Hull-House?
A) Addams won the Nobel Peace Prize.
B)
Addams visited Toynbee Hall in London.
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Addams served on Chicago's Board of Education.
D) Addams advocated for peace before World War I.

From the following passage the correct answer is B, Addams visited tony bee hall in London.

The Addam lives in London and also worked thee too till his last breath , he build his very good image among the people by his writing skills  by his narration and poem and he very good in the settlements too. Hull house was very densed populated as many people came there to stay .

During the Hull house various revolution were held and many strategy were made too.

For more information on Addams , please refer the below link link

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.