Which sentence is free of errors? Select one of the options below as your answer:

a. Although I left for home, it stopped raining.

b. However, I left for home, it stopped raining.

c. Before I left for home, it stopped raining.

d. Therefore I left for home, it stopped raining.

Well, there is only one that makes sense. Try reading them out loud. Although i left for home, it stopped raining. What does you leaving for home have to do with the rain stopping. However, i left for home, it stopped raining. This doesn't make sense either. The only one that makes sense would be the third one.