The sentence in the paragraphs that best supports the overall theme of the passage is:
After three days sleeping in a tent, cooking over a fire, and hiking miles over a rough trail, Henry felt he could rely on his outdoor skills.
<h3>What is theme?</h3>
Theme is known to be the overall idea a work of literature is trying to communicate. It usually gives a bearing to readers to understand a work of art or literature. It usually reveals the writer's purpose of writing.
In the given paragraphs, we see that the theme is revealing how Henry was able to acquire his skills which he began to rely on.