How do the details in the 5th paragraph develop the claim in the text? A. They explain why the submarine is often used in warfare.
B. They explain how a submarine performs in war.
C. They explain why an airship is difficult for a submarine to attack.
D. They explain how a submarine navigates underwater.

 The correct answer is option D. They explain how a submarine navigates underwater.

Explanation:

 According to the details offered in paragraph 5, we can observe the operation of a submarine under water. Explains how to navigate and what happens when a certain amount of water interacts with it.

This paragraph also helps explain why submarines can be easily attacked by an airship, as they can be seen when they surface, as explained in the text.

Given this information we can say that the correct option is option D.

adverb clause because it is using arrives