A. Rather than, I feel as if it’s more of a better answer with more upgraded words, and instead of is a barebones of an answers. So go with Rather than
He was a high ranking Roman Army Officer. He's important because he, with all his great power and ability to command, was very humble and very faithful in Christ's power. Perhaps I'm using the wrong word, but don't forget the centurion recognized power before anything. He is remarkable because he did not respond exclusively to power. He responded to his understanding of faith.
Read Matthew 8:5:13. It's in Luke to but I'm not familiar with it in that gospel.
The dependent clause of the sentence is "If we are going to make it to the movie on time," because it depends on the next part of the sentence to make sense. Without the next half of the sentence, the clause left alone wouldn't make any sense. The other clause is independent, meaning that it still makes sense when it stands without the dependent clause.