The appositive is usually a group of words related to a noun, usually a subject, and describes it in more detail.
The appositive here is a river that flows through Egypt.
Another way of easily spotting an appositive is by looking for commas - if it is separated from the rest of the sentence by commas, it is likely to be an appositive.
Answer:
B.
Explanation:
Add the semicolon to avoid a run-on sentence.
A sentence fragment because it is incomplete
I don’t know but I hope you have a good day