Which of the following is an example of a compound$-$complex

$1$ point sentence?

Susan B$.$ Anthony explored new social and political territory in the United States during the $1920$ s$.$

That Anthony had remained unmarried gave her an important business advantage in this work.

Because the media treated her like a celebrity, she was very popular; in fact, she averaged $75$ to $100$ speeches per year.

She gave speeches from the top of a billiard game table and in a train stuck in the snow for days.