Answer:
A. Knowing that the attack might reach us in all too short a time, we
immediately began greatly to increase our industrial strength and
our capacity to meet the demands of modern warfare.
Explanation:
The attack is coming quickly so the logical thing to do is to prepare. The other examples are motivational or pathological statements while the first one (A) uses a clear and methodical string of thought to find a solution for the coming attack.
(If a picture type thing helps you: attack coming soon---what do we do?---begin to prepare for the attack immediately.)
The correct answer is A.<span>could not be heard above the voices in the hallway
</span>
B is a subject, C is an adverbial of reason, while D is an adverbial of manner.
Empathy is when someone understands and shared the feelings of others. Sympathy is when you feel sorry for someone else
