Which of the following is an example of a public service announcement, or PSA ?

A public service announcement (PSA) is typically a message created to inform or educate the public about an issue, promote social change, or raise awareness about a topic that benefits society. Examples of PSAs include:

1. **Anti-smoking campaigns** that highlight the dangers of tobacco use.
2. **Seat belt safety advertisements** that encourage people to buckle up while driving.
3. **Health awareness campaigns** focusing on issues like mental health, diabetes prevention, or substance abuse.
4. **Environmental conservation PSAs** that promote recycling, saving energy, or protecting wildlife.

If you have specific options in mind, please provide them so I can help identify which one is a PSA!