Introduction:
Media literacy refers to the ability to access, analyze, evaluate, and create media messages in various forms. It involves understanding how media influences our thoughts, beliefs, and behaviors. One of the main functions of media literacy, as described in the text, is to help audiences become competent and critical in all media forms.

Explanation:
Media literacy plays a crucial role in today's society, where we are constantly bombarded with media messages from various sources. It is important for individuals to develop the skills necessary to navigate and make sense of these messages. Here's a detailed explanation of why helping audiences become competent and critical in all media forms is one of the main functions of media literacy:

1. Understanding Media Influence:
Media literacy helps individuals understand the influence of media on their thoughts, attitudes, and behaviors. It allows them to critically analyze media messages and recognize potential biases, stereotypes, and manipulations. By becoming aware of these influences, individuals can make informed decisions and resist any negative effects of media.

2. Developing Critical Thinking Skills:
Media literacy encourages the development of critical thinking skills. It teaches individuals to question, analyze, and evaluate media messages rather than accepting them at face value. By critically examining media content, individuals can distinguish between fact and opinion, identify logical fallacies, and detect propaganda techniques.

3. Promoting Active Engagement:
Media literacy encourages active engagement with media rather than passive consumption. It promotes active participation, such as creating media messages or engaging in discussions and debates about media content. By actively engaging with media, individuals become more aware of its power and influence.

4. Enhancing Communication Skills:
Media literacy helps individuals enhance their communication skills. It enables them to effectively express their ideas and opinions about media content and engage in meaningful discussions with others. By developing these skills, individuals can contribute to a more informed and media-literate society.

5. Empowering Individuals:
Media literacy empowers individuals by giving them the tools to navigate the complex media landscape. It enables them to access a wide range of information, critically evaluate it, and make informed decisions. By being media literate, individuals can resist misinformation, propaganda, and manipulation.

Conclusion:
In conclusion, one of the main functions of media literacy is to help audiences become competent and critical in all media forms. By developing these skills, individuals can navigate the media landscape effectively, critically analyze media messages, and make informed decisions. Media literacy plays a crucial role in empowering individuals and promoting a more informed and media-literate society.