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.

i have 15 more questions to answer and i’m a english person

answer: b) bubbling its way

explanation: an adjective is a word or a group of words that modifies a noun (name, thing, place,

in this case, the first option "to heartily enjoy" isn't describing or modifying any noun, the third option "hiking along merrily" is describing an action but it doesn't modify any noun, the last option "beside us" is just a preposition that indicates position, so the correct answer is the second one: "bubbling its way" because it is modifying the noun "stream".