Read the following passage and mark the letter A, B, or D to choose the word or phrase that best fits each of the numbered blanks.

Teens are using social media for a multitude of reasons. Firstly, it allows them to (21) ______ themselves freely in ways that may not be feasible in offline settings. Social media serves as a platform (22) ______ they can share their thoughts, opinions, and creativity with a wider audience.

Additionally, it provides an instant and accessible (23) ______ of communication with friends and peers. (24) ______, social media platforms often act as forums for seeking advice, support, and, especially for those who may feel isolated. Furthermore, the constant feedback and interactions on social media can significantly impact (25) ______ teens' self-esteem.

Firstly, it allows them to (21) ______ themselves freely in ways that may not be feasible in offline settings.