Answer:
A) Measuring cup with water and a scale
Step-by-step explanation:
Fill the measuring cup with water to a certain point, and record the current height of the water. After placing the banana fully into the water, record the new height of the water. Subtract the old height from the new height. Now you have the banana's volume.
Then, place the banana on a scale to get it's mass.
Perform
, where p = density, m = mass, v = volume.
Note: 1 milliliter = 1 centimeter^3