Which of the following scenarios is an example of a trade sanction

The scenario of you refusing to import diamonds from Sierra Leone due to human rights violation is an example of trade sanction.

Explanation:

A sanction is imposed on one country by the other for not complying to certain norms or for not behaving in a manner that is desired. It can also be imposed to promote a certain kind of behaviour or to make a country take some actions on certain issues that the other (dominant) country is expecting it to take. These sanctions are for the purpose of isolating the country on the global level until it agrees on complying to the global rules conventionally accepted over certain issues.