Which of the following is least likely to be affected by health and safety laws?

The assertion that none of the options are affected is correct because health and safety laws are designed to ensure the protection of workers and the public, and these laws apply broadly across various types of workplaces, including manufacturing plants, office buildings, and retail stores.

Manufacturing plants are typically subject to stringent health and safety regulations due to the potential risks associated with machinery and hazardous materials. Office buildings protect employees from ergonomic hazards and require consideration for factors like indoor air quality and emergency exits. Retail stores must comply with health and safety regulations to ensure a safe shopping environment for both customers and employees, addressing issues like fire safety, crowd control, and slip hazards.

Since health and safety laws are comprehensive and applicable to all types of workplaces to varying degrees, stating that none of these options is unaffected correctly acknowledges the universal impact these laws have across the spectrum of employment settings.