A student doing a science fair project tries to germinate tomato seeds at different soil temperatures. She writes, "I planted 10 seeds at each of three temperatures. I found that 20% germinated at 55 degrees, 40% germinated at 60 degrees, and 37% germinated at 65 degrees." Why must her report be wrong?  a)_The three percent given don't add to 100%.   b)_It's wrong to report percents.   c)_37% is not a possible percent in this situation.   d)_This isn't an experiment.

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