Students design an experiment to test the displacement of water in a glass when ice cubes are added. The water level is marked for each glass. What is the control group in this experiment? a small glass of water
a glass of water with no ice cubes
a glass of water with two ice cubes
a glass of water with one ice cube

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant. 

Answer (b) supersaturation;

Depends on the speed of the car.