Answer:
The correct answer is D.
Explanation:
A is very informal due to the use of slang such as ''ain't''.
B has an informal tone and language due to the usage of 'you guys' to address other people.
C is very informal due to the use of shortened street slang ''Y'all'' commonly used in informal set-ups for example among friends.
The Americans stopped attacking the British outside of Philadelphia after they retreated for the first time because of the weather.
It was winter, and whereas the British were warm and cozy, whereas those Americans who still wanted to fight were frozen and deprived of food and resources. Thus they decided to wait until the weather cleared and then attack their enemies.
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