Which muscles are voluntary?*1 pointcardiac and skeletalSmooth muscleAll muscles are voluntarySkeletal muscle

To answer the question regarding which muscles are voluntary, we can break it down as follows:

1. Identify the Types of Muscle Tissue:

   • Cardiac muscle: Involuntary, found in the heart.
   • Skeletal muscle: Voluntary, attached to bones and under conscious control.
   • Smooth muscle: Involuntary, found in organs and systems such as the digestive tract and blood vessels.

2. Determine the Characteristics of Voluntary Muscles:

   • Voluntary muscles are those that can be consciously controlled, which primarily refers to skeletal muscles.

3. Evaluate the Options Provided:

   • Cardiac and Skeletal: Incorrect, as cardiac muscle is involuntary.
   • Smooth Muscle: Incorrect; smooth muscle is also involuntary.
   • All Muscles are Voluntary: Incorrect, as some muscles are involuntary.
   • Skeletal Muscle: Correct, as it is the only voluntary muscle type listed.

Final Answer

The correct answer is Skeletal muscle.