Either investigates or elaborates. I think it's elaborates
<h2>
Answer:</h2>
A. by repeating the installation steps described in the document and referring to the diagram
<h2>
Explanation:</h2>
The last sentence under "Keeping It Clean" says "If the filtration system does not start when plugged in, repeat the installation steps. If it still does not work, consult your aquarium store." This is pretty much what answer A says.
Here's a photo of Edge just incase, have a good one.
The answer is c because he wants something to repair
Answer:
A rising tension that gradually fades.
Explanation:
The beginning of the essay is a strong sentence that keeps adding elements of suspense as it develops, eventually making the sentence overloaded with information (especially considering that it is the first sentence of the essay). Nevertheless, the entire sentence seems to describe a single action.
The second sentence is a complex sentence that, in contrast to the first, has several smaller steps in the development of the plot. The steps are divided but complementary; they happen independently of each other and add to each other's meaning, at the same time.