You need to measure three things: 1. a quantity of water 2. the length of a leaf 3. the mass of a small stone which unit of metric measurement will you use for each one? a.1. milliliter, 2. centimeter, and 3. gramb 1. centimeter, 2.milliliter, and c.3. gram 1. liter, 2. kilogram, and 3. meter

A.1. milliliter, 2. centimeter, and 3. gram

Explanation:

The quantity of water could be measured in mililiters or liters depending on the quantity, then the length of a leaf should be measured in centimeters as it won´t be longer than a meter, so the best way to measure it is centimeters, and the mass of a small stone is about 25-100 grams so the units to measure it should be grams.