The subordinate clause in this sentence is because I forgot to buy milk. The whole sentence is used as an adverb. Adverbs are used to answer questions such as where, when, or in this case, why.
Why did I have root beer in my cereal? Because I forgot to buy milk.
A rough draft would be D because its like a rough sketch your wanting to get ideas down for your final essay
Connection is when you know something similar or like the thing you read or heard its like a memory
