Muscles attached to our skeleton are under our control.

Explanation:
Muscles are responsible for the movement of our body. They work in pairs, with one muscle contracting and the other muscle relaxing to create movement. There are three types of muscles in our body: skeletal muscles, smooth muscles, and cardiac muscles.

Skeletal muscles are the muscles that are attached to our skeleton. They are also known as voluntary muscles because they are under our conscious control. These muscles are responsible for the movement of our bones and joints. They allow us to perform various activities such as walking, running, jumping, and lifting objects. Skeletal muscles are attached to bones by tendons, and they are responsible for the voluntary movements that we can control.

On the other hand, smooth muscles are found in the walls of hollow organs like the stomach, intestines, and blood vessels. They are also known as involuntary muscles because they are not under our conscious control. Smooth muscles contract and relax automatically to regulate the movement of substances through these organs. For example, the smooth muscles in our digestive system help to push food along the alimentary canal.

Cardiac muscles are found only in the heart. They are responsible for the continuous pumping of blood throughout our body. Like smooth muscles, cardiac muscles are involuntary and work automatically without our control.

In conclusion, the muscles that are under our control are the skeletal muscles. These muscles are attached to our skeleton and allow us to perform voluntary movements. Smooth muscles and cardiac muscles are involuntary and work automatically without our conscious control.

The answer c is correct