Question

Matteo has this energy output data for a set of solar panels that he sells in
his area. A homeowner who uses about 800 kWh of energy each month is
considering buying a set of 30 solar panels. Matteo tells the homeowner that
there is too much cloud cover during the winter months for the homeowner
to rely on solar panels for a significant amount of power. What is the BEST
evidence to support Matteo's conclusion?
A)
B)
C)
D)
The solar panels have the lowest energy output in December, January,
and February.
The solar panels do not produce close to 800 kWh in March, April, and
May.
The solar panels do not produce close to 800 kWh in September,
October, and November.
The solar panels do not produce close to 800 kWh in December, January,
and February.
Month
kWh
January
18.6
February
15.2
March
21.7
April
27.1
May
41.9
June
44.3
July
44.8
August
42.6
September
36.5
October
32.8
November
21.8
December
19.3

Answer 1

D. Multiply the monthly kWh per panel by 30: Jan 18.6×30 = 558 kWh, Feb 15.2×30 = 456 kWh, Dec 19.3×30 = 579 kWh — all well below the homeowner's ~800 kWh monthly use, so the panels are insufficient in December–February.