It is choice 2: copper, bronze, and stone
Cellphones can allow you to do better in school, and are a good way to communicate with teachers.
Answer:
well uhm can't you just look it up?
This is an example of parallelism.
Parallelism is repeating grammatical constructions in the same way.
For example, the statement: "I came, I saw, I conquered" is parallel because each segment is NOUN + VERB (past tense). If it were written: I came, I saw, I was conquering" then the statement would not be parallel.
