I believe that the answer you are looking for is letter D, 11.0 grams/milliliter.
Solution/Explanation:
Writing out the formula for the density, using mass and volume,
D=m/v
Substituting the given values of the variables,
D=33.0 grams/3.0 milliliters
33÷3=11.
So, therefore the final answer is the letter D, 11.0 grams/milliliter.
I hope that this has helped you. Enjoy your day, and take care.