Answer:
A
Explanation:
Supporting evidence is always something that you'll need in any text.
The answer is most likely the second one
If the fact that she didn't come after should logically proceed after they planned a barbecue for Saturday which I think it should. A would be the answer.
A singular verb would be used with a singular noun (she, Bob, Jane, truck) while a plural verb would be used with a plural noun (they, cars, books).
For example "The truck drives away." Truck being a singular noun and drives being a singular verb.
Another example
"The cars drive away." cars being a plural noun and drive being the plural verb.
The answer is D: Carrying