Mass.
Because mass doesn't depend on weight but weight depends on mass.
It's a quantitative observation because it includes numerical data.
Protons, neutrons, and electrons<span> are the three main subatomic particles found in an atom.</span>
Answer:
A. Measurements are made with tools; observations are not
Explanation:
Measurement: <em>the assignment of numbers or codes according to prior-set rules. </em>
Observation: <em>data from an individual study subject or sampled unit.</em>
Measurement error: <em>differences between "true" answers and what appears on data collection instruments</em>
hope this helps
plz mark brainleist
