Final answer:
The TV series with fewer than eight seasons is "Grey's Anatomy', as it concluded with its eighth season.The correct option is C.
Step-by-step explanation:
As of 2023, "Grey's Anatomy" has had fewer than eight seasons. The show, which premiered in 2005, had completed its 19th season by 2023. In contrast, the other options have had longer runs:
"Friends" concluded with its 10th season in 2004.
"The Simpsons" has been on air since 1989 and had surpassed 30 seasons by 2023.
"Game of Thrones" concluded its eighth and final season in 2019.