The sentence that correctly uses punctuation with a subordinating conjunction is:
Because of you, I was able to get the help I needed.
The other sentences either do not punctuate the clauses properly or misuse the subordinating conjunction.
Because you offered to help.
Because you offered to help.
You came over: because I needed some help.
You came over: because I needed some help.
Because of you, I was able to get the help I needed.
Because of you, I was able to get the help I needed.
I got the help I needed; because I needed some help
1 answer
The sentence that correctly uses punctuation with a subordinating conjunction is:
Because of you, I was able to get the help I needed.
The other sentences either do not punctuate the clauses properly or misuse the subordinating conjunction.