An office or post with no work but high pay

The correct answer is: B. Sinecure

A sinecure is a position that is high-paying but has little or no work associated with it. The term comes from the Latin word sine cura, which means “without care.” Sinecure positions are often given to friends, family members, or political allies as a way of rewarding them or keeping them happy.

Here are brief explanations of each option:

• Honorary means “given or done without payment or expectation of payment.” Honorary positions are often given to people who have made significant contributions to a particular field or organization.
• Gratis means “free of charge.” Gratis work is often done by volunteers or interns who are looking to gain experience or make connections in their field.
• Ex officio means “by virtue of one’s office.” Ex officio positions are often given to people who hold certain other positions, such as the president of a company being a member of the board of directors.