"diction" means word choice, aka the words that one chooses when writing or speaking. choice A uses this word correctly, because if you know more words, you'll be able to use "good diction" aka you'll have more words to choose from.
The notion that one's misdeeds cannot go unnoticed
The correct form of the sentence would be "Lisa went with [her] to the program."
I think B and also what diagram?
Answer:
C: What has happened in the history of elections