converts more electricity into heat. spins at a slower rate than the original fan. requires more electricity than the original fan. reduces the percentage of heat lost to the atmosphere.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: An appliance manufacturer has redesigned its original electrical fan. It has made the new fan more energy efficient. This means that the new fan
Possibilities:
- converts more electricity into heat.
- spins at a slower rate than the original fan.
- requires more electricity than the original fan.
- reduces the percentage of heat lost to the atmosphere.

reduces the percentage of heat lost to the atmosphere.