Question

a word describing subjective observations or that are based on numbers or precise measurements
a. controls
b. quantitative observations
c. dependent variable
d. qualitative observations

Explanation:

Quantitative observations are based on numbers or precise measurements. Controls are used in experiments to compare results. A dependent variable is what is being measured or observed in an experiment. Qualitative observations are subjective and based on qualities or characteristics, not numbers.

Answer:

B. Quantitative Observations