Question

anna is conducting an experiment to determine how weather affects cell phone reception. she is trying to decide the best way to conduct her experiment in order to collect meaningful data. which of the following experiments would help anna collect the best data? a. test different cell phones in different locations on days with clear weather b. test a cell phone’s reception in the exact same location under various atmospheric conditions c. test a cell phone’s reception in one location with clear weather and in another location with rainy weather d. test different cell phones in different locations on days with rainy weather

Explanation:

To determine how weather affects cell phone reception, the experiment should isolate weather as the variable. Option B tests the same cell phone in the same location (controlling other factors) under various atmospheric conditions (changing weather), allowing clear data on weather's impact. Other options either fix weather (A, D) or change location (C), introducing confounding variables.

Answer:

B. Test a cell phone’s reception in the exact same location under various atmospheric conditions