Answer:
A is the most reasonable answer and is opinion based
Studying in a public place like a station or bus is the worst. And studying in a library or home is the best. studying in a bus or station is worst because there are, at most times, noisy people around. The more unnecessary noise the less focused you are. And studying at home or a library is way better. The library is quiet so you wouldn't have to worry about not concentrating; being at home may be better because the familiar surroundings keep you comfortable.
Answer:
You displayed a depth of knowledge in your initial interviews that is extremely impressive.
Explanation
"We are happy to let you know that we that we think you're pretty clever." Is informal and based on this message it does not fit.
"Our intention at this juncture is to scrutinize your intellectual capacity and creative prowess" Is very words and seems a bit excessive. It doesn't match other parts of the assignment.
"You seem way smarter than a lot of people." Doesn't fit the formality at all.
Therefore "You displayed a depth of knowledge in you initial interviews that is extremely impressive" is the best way to go.
