Explanation:

- Option 1: Gluteus Maximus

- This is the correct answer.

- It's the largest muscle in the human body.

- Provides strength for movement and maintains the pelvis in balance.

- Helps in activities like standing, walking, and running.

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- Option 2: Iliopsoas

- A group of two muscles crucial for hip flexion.

- It's not the largest muscle.

- Option 3: Latissimus Dorsi

- Large back muscle important for arm movement.

- Not the largest muscle but significant for moving the shoulders.

- Option 4: Sartorius

- The longest muscle in the human body.

- Helps in rotating and flexing the hip and knee.

- Not the largest.