Question

National Institute of Standards and Technology (NIST) has developed the most accurate clocks in the world. Clocks have to be adjusted by _______ ( Added or Subtracted) once in 20 million years. *

A. 1 second

B. 1 minute

C. 1 hour

D. 1 day

✌️✌️ONE MORE Q.✌️✌️​

Answer 1

Answer:

I think 1 day is the answer mark me brainlest