Question

what unit is used to measure the mass of a couple marbles?
grams
liters
centimeters

Explanation:

To determine the unit for measuring the mass of marbles, we analyze each option:

• Grams: A unit of mass, suitable for small objects like marbles.
• Liters: A unit of volume (for liquids), not mass.
• Centimeters: A unit of length, not mass.

So grams is the correct unit for mass measurement here.

Answer:

A. Grams