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

Which option best describes the two simple sentences into a compound sentence while maintaining the meaning of the original sentence

Maverick and his dog went to the store
Because Maverick needed to go to the store, his dog wanted to go
Because the dog wanted to go with him Maverick to go to the store
Needed to go to the store and Dawg wanted to go with him

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