Final answer:
The best method to estimate the amount of 125cc is by using a graduated cylinder. Option C
Step-by-step explanation:
To estimate the amount of 125cc, the best method would be to use a graduated cylinder (option C). Graduated cylinders are commonly used in laboratories to measure the volume of liquids with great accuracy.
By mentally subdividing the distance between the marks on the cylinder, one can make an estimate at the bottom of the meniscus, which is the lowest point on the curved surface of the liquid. This method allows for a precise measurement of volume, making it ideal for estimating the amount of liquid. Option C