C.
"Continues" takes the present tense and also applies that this work is continuous --> ongoing.
It is piled high because of sticky (more viscous) lava
Answer: A
Explanation:
Well, you wouldn't say "Let's eat Grandma"
But you would write "Let's eat, Grandma!"
When you talk, you pause, right?
Try reading out loud a sentence and add a comma when it pauses, a period when it ends, and a semi-colon when the text gets too long but you have more to say; like I do for instance.
I believe it’s The history of American literature stretches across more than 400 years. It can be divided into five major periods, each of which has unique characteristics, notable authors, and representative works.
Or
The history of American literature stretches across more than 400 years. It can be divided into five major periods, each of which has unique characteristics, notable authors, and representative works.
I’m so sorry if I get it wrong