Question

Which is a correctly formed compound sentence?
Daniel was very excited to watch his favorite team play. But they lost.
Daniel was very excited to watch his favorite team play but they lost.
Daniel was very excited to watch his favorite team play, but they lost.
Daniel was very excited to watch his favorite team play; but they lost.

Answer 1

Daniel was very excited to watch his favorite team play, but they lost.

Answer 2

I'm like 99% sure that's correct. typically you get a comma before and, but, & or

Answer 3

Correct :)