Jenna falls asleep suddenly, when she is trying to do other things. Which sleep disorder does Jenna probably have?

Answer: narcolepsy

Explanation: this is a disorder when sudden sleep attacks occur in the middle of activities

Answer: What Is Narcolepsy? Narcolepsy is a neurological disorder that affects your ability to wake and sleep. People with narcolepsy have excessive, uncontrollable daytime sleepiness. They may also suddenly fall asleep at any time, during any type of activity.