EXPLANATION
Question: Which unit is used to measure length in the SI system?
- a) Centimeter
- b) Inch
- c) Meter
- d) Kilometer
ANSWER: c) Meter
EXPLANATION:
c) Meter
The unit used to measure length in the International System of Units (SI) is the meter (symbol: m). The meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. It is the fundamental unit of length in the SI system and is used globally for scientific, industrial, and everyday measurements of length.
