Physics, 13.01.2021 20:40 jamesgraham577

Please help me I’m struggling :( When is a secondary source more helpful than a primary source?
A. When you want to know the exact data values
B. When you do not need to know the conclusion of the experiment
C. When you want to confirm the conclusion with your own
experiment
D. When you are not an expert in the field being studied in the
experiment

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Please help me I’m struggling :( When is a secondary source more helpful than a primary source?