10 POINTS AND BRAINLIST MY GRADE IS ON THE LINE!!!!!!

Chose the sentence that best describes the bolded expression in the passage below:

Sheryl would have kept riding her bike until the cows come home if her brother Sam hadn’t come to tell her it was time for dinner.

Sheryl won’t come home until the cows do.
Sheryl would have continued to ride her bike for a long time.
Sheryl prefers to ride her bike than play games.
Sheryl was about to come home on her own.