Serena and her girlfriends were extremely challenged during the recent COVID$-19$ pandemic lockdown as malls, coffee shops, and all other traditional meeting places were closed. With their high school graduation activities cancelled and their first year of university looking completely different than they dreamed it would be$,$ they took great comfort in constant contact with each other through an inordinate amount of time on their cellphones using social media. Which group does Serena belong to$?$

a member of Generation $x$

a cohort generation

a member of Generation Z

a member of Generation Y