What action may involve temporary removal of a licensee's operating rights?

The correct answer is the suspension of a license, which specifically refers to a temporary removal of a licensee's operating rights. A suspension typically occurs when there are concerns regarding the conduct or performance of the licensee, indicating that they need to rectify certain issues before being allowed to operate again. This action is meant to be temporary, often allowing the individual an opportunity to address any violations or concerns that led to the suspension.

This differs from other options such as termination, retirement, and revocation. Termination suggests a complete end to the license's validity and is not intended to be temporary. Retirement generally refers to a voluntary decision by the licensee to cease their operations without any intention of returning, and revocation denotes the permanent loss of a license due to serious infractions, thereby eliminating any possibility of regaining those rights.