I think it's A. I'm not 100% sure.
Answer:
A
Explanation:
"Keep", "factor", and "calculate" are all verbs in the list of things the new system allows teachers to do. The other sentences are inconsistent with their list of verbs/adjectives/nouns. Thus, option A is the only one that is grammatically correct.
She was a published author. This was very different from other Puritan woman because writing was usually only done by men. Hope this helps.
Answer:
it is C.to comment about an issue facing society