Answer:
C
Explanation:
It was in a quizlet. Hope this helps!
It is the combination of the time zone and daylight saving rules, along with the timekeeping services, which determines the legal civil time for any U.S. location at any moment. The clocks run by NIST & USNO are kept synchronized with each other as well as with those of other international timekeeping organizations.
They are not the same age no
