(i) A compact fluorescent lamp uses 75% less energy than a traditional bulb. |
(ii) Earth Hour is celebrated on the same day every year. |
(iii) The screen saver on a computer saves energy. |
(iv) About 30% of the cool air inside a refrigerator escapes every time its door is opened. |
A) 1
B) 2
C) 3
D) 4
Correct Answer: B
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