Respuesta :
The best unit to measure a required yard area is foot.
What is a unit?
It is the reference quantity in which other similar quantities can be measure.
Given that,
Kimberly wants to measure the area of her backyard.
So for measuring a yard,
Centimeter unit very small reference
Similarly, Kilometer and mile is very large references.
∴ The best suited unit is foot to measure the backyard area.
To learn more about units, refer to the link:
https://brainly.com/question/19244145
#SPJ5