In what program, a student must pass an exam at the end of course with a 3 out of 5 in order to get college credit. some colleges require even higher scores or they will not accept the credit.

Which of the following activities would conserve the most energy? installing a dimmer switch on a light using a blender instead of a food processor hanging clothes to dry on a clothesline instead of ironing them opening a window instead of turning on the air conditioning setting your computer's screen saver to turn on after less time has elapsed