Going with a more uncomfortable material for better stability is an example of a? * Prototype
Trade-off
Experiment
Identifying a need

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