I would say C. Chatter always was talking quickly to someone, and communication is anyway humans interact. (Speaking, writing, sharing ideas)
An outsider is someone who doesn't quite fit in with everyone else and a displaced person is someone who doesn't belong in a certain category. A person can become either of these things by being different from others in some way.
To indicate a completed action
Answer:
The sugar has dissolved in the lemonade
Explanation:
Why? Because it is a solution. If you need to sepeate it again put it in a petri dish and set it in the sun
