Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions.

Ensuring social media becomes a safer space for teenagers requires collective efforts from users, platform developers, and authorities. Firstly, educating teens about online safety measures is crucial. Teaching them to verify sources, identify trustworthy information, and recognise potential dangers of interacting with anonymous users can empower them to navigate social media more safely. Additionally, promoting open discussions about online behaviours and the impact of cyberbullying can help raise awareness and encourage responsible usage among teenagers.

Secondly, platform developers must prioritise the implementation of updated safety features and policies. Regular updates to privacy settings, content moderation tools, and reporting mechanisms can enhance user protection and foster a safer online environment.

Lastly, collaboration between parents, educators, and policymakers is essential in establishing comprehensive guidelines and support systems for teenage internet users. Encouraging parental involvement, providing resources for digital literacy education, and advocating for stricter regulations on online platforms can collectively contribute to creating a safer digital landscape for teenagers to explore and connect.

The security system employs _______ recognition technology to grant access to authorised personnel.