It would be cookies cause its the only plural thing and its a noun
Answer: Eating is our source of energy and is crucial to our survival. If we didn’t eat for a time as short as three days, then we wouldn’t survive.
Explanation: this is just a thesis and the beginning to your piece, but it should be easy to build off of. Good luck!
I believe it is A due to "The lady made detailed plans, engaged the caterer and the orchestra well in advance" isn't exactly connect well and be hard to understand so you'd put a comma between "caterer, and".
The news sources form of the speech might not have the speech entirely, meaning that the clips they do have could be easily taken out of context.
A personal reading of the transcript has the full speech, and it can be interpreted fully without anything being taken out of context.
Using the formula:

Which is, 3.14 x 2^2 (radius is half of diameter)
Which equals 12.56.