Byron works at a copy center. He made thousands of copies for three companies. He thinks he may have printed them on the wrong paper. He looks at the top 20 copies to see which type of paper he used. His sample is biased. How could he modify the sample to eliminate bias?

you are the source of the heat energy. you can minimize the heat energy by selecting the appropriate clothes to wear.

i am positive it is c. condensing but i may be wrong

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.