Read the sentence from the section "Two Key Parts Make Up Nuclear Fusion."

This means the end of the line for small

stars, who quietly fade into darkness

after they have used up their hydrogen.

The phrases "end of the line" and "fade into

darkness" in the sentence give the reader a sense

А

that the stars suddenly die

B

that the stars gradually disappear

that the stars become too dim to see

D

that the stars need more hydrogen for energy

Next

B. that the stars gradually disappear

Explanation:

According to the sentence from the section Two Key Parts Make Up Nuclear Fusion, "this means the end of the line for small

stars, who quietly fade into darkness after they have used up their hydrogen", the phrases "end of the line" and "fade into darkness" makes the reader understand that the stars gradually disappear.

This is because, the phrases show that the stars will gradually disappear as they have run out of hydrogen.

two factors or characteristics of a chapter that might make it difficult to read would be words i don't understand, or if i don't fully understand what's going on in the chapter. strategies i can use to get through the difficult material would be a dictionary, and re-reading previous chapters to get a better grasp of what the author is trying to say.

"a" because he is appealing to logic as oppose to appealing to the audience's emotions.