Final answer:
Daylight saving time is a practice of setting the clock one hour ahead during spring and summer months to make better use of sunlight in the evenings.
Step-by-step explanation:
Daylight saving time is a practice of setting the clock one hour ahead during spring and summer months. This allows people to make better use of sunlight in the evenings. The rationale behind this practice is that it is easier for the government to change the time by one hour than for individuals and businesses to adjust their schedules. However, it is important to note that daylight saving time does not actually save any daylight.