Correct Option is C) Because The Muscles of arm which are voluntary muscles.
Name: Skeletal muscles
A) Is wrong because The Muscles of stomach are Involuntary Muscles.
Name: Smooth muscles
B) Is wrong because The Muscles of intestine are Involuntary Muscles.
Name: Smooth muscles
D) Is wrong because Muscles of heart are Involuntary Muscles.
Name: Cardiac Muscles

Muscles are tissues in our body that enable movement by contracting and relaxing. They are divided into two categories: voluntary muscles and involuntary muscles. Voluntary muscles are under our conscious control, meaning we can control their movements, while involuntary muscles work automatically without our conscious control.

The correct answer is option 'C', which states that muscles of the arm are voluntary muscles. Let's explore this further:

Muscles of the Arm:
The arm is a part of our body that allows us to perform various actions such as lifting, throwing, pushing, and pulling. These actions are possible because of the muscles present in the arm. Some of the major muscles in the arm include the biceps, triceps, brachialis, and brachioradialis.

The biceps muscle is located on the front side of the upper arm and is responsible for flexing the elbow joint, which allows us to bring our hand closer to our shoulder. The triceps muscle is located on the back side of the upper arm and is responsible for extending the elbow joint, which allows us to straighten our arm. The brachialis and brachioradialis muscles assist in the movement of the elbow joint.

All these muscles in the arm are voluntary muscles because we can consciously control their movements. For example, when we want to lift an object, our brain sends signals to these muscles, instructing them to contract and create the necessary force to perform the action. Similarly, when we want to extend our arm, we can consciously relax the biceps and contract the triceps to straighten the elbow joint.

In contrast, the muscles of the stomach, intestine, and heart are involuntary muscles. The muscles of the stomach and intestine are responsible for the movement of food through the digestive system, while the muscles of the heart are responsible for pumping blood throughout the body. These muscles work automatically and are not under our conscious control.

Overall, voluntary muscles are muscles that we can consciously control, such as the muscles of the arm. Involuntary muscles, on the other hand, work automatically without our conscious control, such as the muscles of the stomach, intestine, and heart.