Which hand gesture is most commonly used?

It's impossible to say definitively which hand gesture is *most* commonly used globally, as hand gestures vary widely across cultures and contexts. However, some common hand gestures that are recognized across many cultures include:

* Pointing: Used to indicate direction or identify something.

* Waving: A greeting or farewell gesture.

* OK Sign: Often used to indicate "okay," "all right," or "good."

* Thumbs Up: Usually signifies approval, agreement, or "good job."

* Peace Sign: Can represent peace, victory, or a "V for victory."

Important note: Even these common gestures can have different meanings in different cultures. For example, the "OK" sign is considered offensive in some countries. It's always best to be mindful of cultural differences when using hand gestures.