Anna suffers from motion sickness every time she rides in her school bus. Her doctor has asked her to take some nonprescription motion sickness medicine. What should she do to avoid abuse?

use the drug in half the dosage to avoid side effects
take the drug according to her mother’s instructions
take the drug according to package instructions
use the drug in double dosage every time she feels sick

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.