4. Why is it important to use appropriate instrument in measuring?
A. It gives exact measurement.
B. The measurements vary.
C. Using nonstandard measuring instrument will give inaccurate measurement.
D. Both A and C

5. Which of the following is the disadvantage/s of using nonstandard measuring instrument like body parts?
A. Using measuring devices give precise and exact measurement.
B. Using nonstandard measuring instrument will give innacurate measurement.
C. Standards of measurement help people process their data accurately.
D. All of the above​