Question

Walt is gathering data about how fa students travel to school each day. What is the best unit of measure to use when gathering his data?

Answer 1

It would either be 'miles' or 'kilometers' depending on which system of measurements you use.

Answer 2

Assuming the word was supposed to be 'far',

the best unit of measure is a measure of legnth or distance, the bigger the better so use miles or kilometers, depending on where you live because english=miles and kilometers=metric
the best unit is kilometers (or miles depending of choice)