Final answer:
A fixed post in the security context refers to a stationary position such as working at a front desk, unlike mobile patrol activities. In physics, examples like a person standing up or a car accelerating are illustrations of motion. Additionally, U.S. foreign policy goals are to ensure national safety, access markets, and protect human rights.
Step-by-step explanation:
An example of a fixed post in the context of security work would be A. Working at a front desk. A fixed post refers to a security assignment where the officer remains stationary at a specific location, such as a front desk, to monitor the area, check identifications, or assist visitors. This is contrasted with options B and C, which involve the security guard being mobile either on foot or with a vehicle. Regarding fixed posts in physics examples, such as a person standing up from a seated position or a car accelerating while driving, both exhibit the principles of motion and could be relevant in the discussion of physics and kinetic energy.
Regarding other topics, the goals of U.S. foreign policy include D. All the above: keeping the country safe, securing access to foreign markets, and protecting human rights. This is an example of how foreign policy objectives are multi-faceted and focus on various aspects of international relations and national interests.