Select the true statement about standards for weights and measures

One of the true statement would be: A pound of flour from the Fluffy Flour Company will be the same weight as a pound of flour from another company.

Standard of measurement is a form of measurement that would be acceptable and had an exact same value no matter where the measurement is taken.
Another example would be on fighter's weigh in.
No matter which country the fighter came from, they stil use the same KG or Lbs measurement for the weight class.