When do humans use more facial muscles?

Correct option is B

• Humans use more facial muscles when frowning compared to when they are smiling.
• Frowning involves the contraction of more muscles, including those in the forehead, eyebrows, and lower face.

• Facial muscles: Human faces have over 40 muscles that help in making different expressions and communicating emotions.

• Smiling: Involves the zygomatic major, which pulls the mouth's corners upward, as well as other small muscles around the eyes.

• Talking: While talking, muscles like the orbicularis oris (around the lips) and buccinator (in the cheeks) are used, but these don't involve as many muscles as frowning does.