Explanation:

- The act describes a person snatching a nose ring, injuring a woman in the process so that blood flows.

- Theft: Taking someone's property without consent. However, if force or injury is used, it's not just simple theft.

- Extortion: Using threats to obtain property. Here, no threat is described, just force.

- Dacoity: Committing robbery by 5 or more people. Here, only one person is mentioned.

- The use of force causing hurt while snatching is legally classified as robbery (not given in options).

- Option 4, None of the above is the right answer because none of the options accurately describe the crime committed.

Correct Answer: Option 4: None of the above