Today’s phrasal verb 42: quieten down
Meaning: If someone quietens down, they become calmer and less excited.
- quieten down The kids usually quieten down after lunch, and sometimes they even go to sleep.
- quieten sth/sb down I wish my neighbour would quieten his dog down. It barks for hours.
Note: “Quiet down” is preferred usage in American English.
Variety: This phrasal verb is typically used in British and Australian English but may be used in other varieties of English too.
The answer is: b