The best answer choice here is A.
A symbol is used to represent and convey emotions or ideas without using a direct example. Usually they make objects or characters stand for something, or symbolize something they are trying to convey.
If the appositive phrase is needed to define the meaning of a noun then <u>don't use a comma</u>, if the appositive phrase defines enough where it can stand by it's self alone then <u>use commas around it.</u>
Answer:
1. navigation
2. keywords
Explanation:
i took the test on PLATO and got it correct.
