TASK DEFINITION: In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.
PROBLEM: Others embraced that time to nurture talents they'd ignored while living or chosen to forsake in order to follow another road.

SOLUTION: Plural

PROBLEM: Your skills are impeccable, but this program involves strict discipline.

SOLUTION: Plural

PROBLEM: During her last year of training, though, the strange headaches that she had begun to experience worsened, waking her from any attempt at sleep.

SOLUTION:
Plural