(A) green roofs can keep buildings warmer in the winter
(B) Dark roofs take in more heat than white roofs
(C) It is harder to heat buildings that have white roofs
Mrs. Mallard's character is not heartbroken or sad, but instead she is happy that she doesn't have to care for anyone else anymore.
I literally just had to answer questions on this short story a unit back.
I would say it would be believability and confidence.
I think that B is in the active voice.
