Just before the bell, Jeff stumbled into math class. Maya watched with
 concern as he plopped into his seat and wearily rubbed his face. Throughout
 the class, Jeff kept pinching himself to stay awake. Afterward, Maya
 confronted him, wanting to know what was wrong. Jeff sighed. "I wouldn't
 admit this to just anyone, Maya, but since you're my best friend....It's this
 science project. My partner isn't doing his share of the work, and I can't let his
 laziness hurt my grade. To make things worse, the topic we picked is a lot
 harder than we'd planned. I've had only three hours of sleep each night this
 week, and I'm feeling pretty sick.
 Jeff pinches himself during math class in order to -*
 10 points
 O
 attract Maya's attention.
 O
 keep himself from falling asleep.
 prevent himself from getting sick.
 O
 receive a warning from the teacher.