Which of the following ensures uniformity of measurement of length across the globe?

The correct answer is: SI units

• A unit of measurement is a precise magnitude of a quantity that is specified and recognized by convention or legislation and is used as a standard for measuring the same type of quantity.
• Any other such quantity can be stated as a multiple of the unit of measurement.
• The definition, agreement, and practical application of units of measuring have played an important part in human endeavor from the beginning to the present. A plethora of unit systems used to be fairly prevalent.
• The International System of Units also known as SI units is the current form of the metric system which now serves as a global standard.