What is the intended purpose of anabolic steroids?

Anabolic steroids are specifically designed to promote an increase in muscle mass and strength, which makes the choice of building body mass the correct one. They help facilitate protein synthesis in the body, which enhances the growth of skeletal muscle tissue. This property is utilized by athletes and bodybuilders to improve performance and physical appearance.

The other options represent different therapeutic or physiological effects that are not the primary function of anabolic steroids. For instance, reducing inflammation is typically the role of corticosteroids, not anabolic steroids. Treating muscle spasms would involve muscle relaxants rather than anabolic agents. Enhancing lung function relates more to bronchodilators and other respiratory medications, rather than anabolic steroids, which do not have a role in treating respiratory conditions. Thus, focusing on muscle growth and development is the main purpose associated with anabolic steroids.