Przykładowe rozwiązanie:

A. advances in technology that are taken for granted by most young people.

≈ technological advances underestimated by the majority of the youth.

B. young people's disapproval of some social media companies.

≈ young individuals' criticism of certain social media platforms.

C. one person's experience of giving up social media completely 

≈ one individual's experience of completely abandoning social media use.