Which of the following is a complex$-$compound sentence?

Although it is considered old$-$fashioned, I prefer phone calls to text or email.

As much as they complain, sometimes they admit that I have a point, and it can be quicker to call than to text back and forth several times.

A lot of people are uncomfortable making phone calls, but I think they are more efficient.

My friends roll their eyes at me$,$ and some of them won't answer their phones.