Question

daylight - saving time, or dst, was first used in the united states in 1918. every spring, people change their clocks one hour ahead, and each fall they change their clocks one hour back. this lets them enjoy an extra hour of daylight during spring. it also causes people to use less electricity. the phrase spring forward, fall back helps people remember how daylight - saving time affects their clocks.

all states do not follow dst. the united states does not force states to follow it. some states like hawaii and arizona do not follow dst. they do not need the extra hour of sunlight. this is because they get enough sunshine throughout the year. indiana did not follow dst until 2006.

what is one reason for using daylight - saving time (dst)?
a. dst allows people to get more sleep.
b. dst causes people to use less electricity.
c. dst lets the government make money.
d. dst lets businesses stay open longer.

Explanation:

The text mentions that daylight - saving time (DST) causes people to use less electricity during spring as it allows for more natural light in the evenings. There is no mention of DST allowing more sleep, helping businesses stay open longer, or enabling the government to make money.

Answer:

B. DST causes people to use less electricity.