Question

the broad muscles across the chest: pectoralis major rectus abdominus hamstrings gluteus maximus

Explanation:

• Pectoralis major: This muscle is located across the chest. It is a large, fan - shaped muscle.
• Rectus abdominus: This is a muscle in the abdominal area, not the chest.
• Hamstrings: These are muscles in the posterior thigh, not related to the chest.
• Gluteus maximus: This is the main muscle of the buttocks, not the chest.

Answer:

pectoralis major