An introvert is likely to stay inside and read all day. Compared to extroverts*, introverts are people who are less outgoing and sometimes prefer solitude than engaging with others.
Winston Churchill, Prime Minister of the United Kingdom (5 April), resigned due to poor health but remained in the House of Commons.
When a person or group works freely it is called 'community service'.
Are there multiple choice answers?
The answer would be extra utility.