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Multiple Choice
Which of the following is the SI unit of length?
A
inch
B
foot
C
centimeter
D
meter
Verified step by step guidance
1
Understand that the SI (International System of Units) is the standard system used worldwide for scientific measurements.
Recall that the SI base unit for length is the 'meter', which is defined based on the distance light travels in a vacuum in a specific fraction of a second.
Recognize that 'inch' and 'foot' are units of length used primarily in the imperial system, not the SI system.
Note that 'centimeter' is a metric unit of length but is a derived unit, equal to 0.01 meters, and not the base SI unit.
Conclude that among the options given, 'meter' is the correct SI base unit of length.