What World War I innovation is still used by Americans today?

Here is the question :

WHAT WORLD WAR I INNOVATION IS STILL USED BY AMERICANS TODAY?

Here is the option for the question :

• The Draft
• The National Guard
• Food Stamps
• Daylight Savings Time

The Answer:

And, the answer for the the question is :

Explanation:

[STC0012010]. Whether you observe Daylight Savings Time with joy or dread, you can thank the Germans for the idea. It went into effect in April 1916 in response to coal shortages during World War I and to protect German towns from bombing at night. The Allies adopted DST, and many countries continue to use it today.