What does "mass" refer to in scientific terms?

The term "mass" in scientific terms refers specifically to a measure of the amount of matter contained in an object. This definition highlights that mass is an intrinsic property of matter and does not change regardless of an object's location or the gravitational force acting upon it. Essentially, mass is a measure of how much "stuff" is present, often quantified in kilograms or grams.

Unlike other concepts such as volume, which measures the space an object occupies, or weight, which is the force exerted by gravity on that mass, the concept of mass is solely about the amount of matter. Therefore, option B is the most accurate representation of the scientific meaning of mass. It is important to understand that mass is different from weight, as weight can vary depending on gravitational pull and is often confused with mass by learners early on.