To send an unwanted person out of the country

The correct answer is C. Deport.

To deport someone is to force them to leave a country, usually because they have broken the law. It is a form of punishment, and it can be a very difficult experience for the person who is deported.

The other options are not as accurate. To exclude someone is to prevent them from entering a country, usually because they

do not meet the requirements for entry. To ostracize someone is to exclude them from a group or community, usually because they have done something wrong. To expatriate someone is to send them to live in another country, usually because they are no longer a citizen of the country they are living in.

Deportation is a serious matter, and it should not be taken lightly. If you are facing deportation, it is important to seek legal help as soon as possible.