Maverick needed to go to the store. His dog wanted to go with him.

Question

Which option best combines the two simple sentences into one compound sentence while maintaining the meaning of the original sentences?
1) Maverick and his dog went to the store.
2) Because Maverick needed to go to the store, his dog wanted to go with him.
3) Maverick needed to go to the store, and his dog wanted to go with him.
4) Because his dog wanted to go with him, Maverick needed to go to the store.

Answer 1

3) Maverick needed to go to the store, and his dog wanted to go with him.