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:
The lifeboat that should have been lying across the main hatch was missing is the correct answer.
Who is Mary Celeste?
Mary Celeste existed an American merchant brigantine realized adrift and abandoned in the Atlantic Ocean off the Azores Islands on December 4, 1872. The Canadian brigantine Dei Gratia
Explanation: