Question

Which sentence is free of errors? Although I left for home, it stopped raining. However, I left for home, it stopped raining. Before I left for home, it stopped raining. Therefore I left for home, it stopped raining.

Answer 1

The third one "Before I left home, it stopped raining".

Here's Why:

#1 includes incorrect conjuctions, and incorrect conjuction placement
#2 includes incorrect comma placement
#4 is a fragment/subordinate clause.