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Q.

Why is the footstep an unreliable measure of length?


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a

The distance between two steps is constant

b

It is a standard unit of measurement

c

It is easier to measure

d

It varies from person to person 

answer is D.

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Detailed Solution

Footsteps are not a reliable measurement because they vary from person to person.
There are several techniques to measure an object's length. However, not all measurements might be categorised as standard measurements. For example, a footstep measurement of length is unreliable. Since each person's footstep is unique, the measurement is inaccurate.
 
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