1. Measuring instruments, such as rulers and graduated cylinders, are often used in experiments to increase the A clarity of the hypothesis B. testability of the hypothesis C. accuracy of the data sample size of the data 5

C. accuracy of the data sample size of the data

Explanation:

Measuring instruments, such as rulers and graduated cylinders, are often used in experiments to increase the accuracy of the data sample size which is usually gotten from the taken reading.

Measuring instruments such as rulers have accurate readings which makes measurements in any form very easy and more accuracy.

im not exactly sure but i think its b!