What do the different categories of hurricanes represent

Category 1 - Winds 74 to 95 mph (minor damage)

Category 2 - Winds 96 to 110 mph (Extensive damage)

Category 3 - Winds 111 to 129 mph (Devastating)

Category 4 - Winds 130 to 156 mph (Catastrophic damage)

I think its wind

Explanation:

because if you see the picture of a hurricane then you can see the wind being strong.

1. (1.2kw)x(15/60hours) = .3kwh --> a

2. (5kw)x(90/60hours)x(8cents/kwh) = $0.60 --> d

3. microwave --> 1200 watts = (1.2kw)x(6/60hours) = .12kwh

coffee-maker --> 900 watts = (.9kw)x(10/60hours) = .15kwh

therefore, it requires more energy for the coffee-maker to do the same amount of work.

so the answer is a.