Fact 1: Abalance is used for measuring mass of an object.

Fact 2: Mass The base unit of mass is the gram.

Given the two facts above, answer the question "What instrument measures in grams?" with the following options: 
- sweating
 - A balance
 - heat energy
 - A ruler
 - nutrients
 - An anemometer
 - energy
 - A thermometer


 

  A balance       