[Q]: Which of the following solutions is better for the following goal:
Make dusting windows faster.

[A]: Use hair dryer to blow dust off.

[Q]: Which of the following solutions is better for the following goal:
how to use spray paint

[A]: take off the cap, and shake the can several times. Hold upright, and with the nozzle opening facing away from you, firmly press down and spray in a sweeping motion.

[Q]: Which of the following solutions is better for the following goal:
How to fill your car with gas.

[A]: Select payment method, open gas cap, put nozzle into gas tank opening, press gas section start button, pull trigger and wait for gas tank to be filled.

[Q]: Which of the following solutions is better for the following goal:
How can I dust, keep my hands clean, and get everything up quickly?

[A]:
Put old socks on your hands, if it's particularly dirty add more pairs on your hands and as each layer gets dirty remove until you are all done.