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Social Studies, 18.02.2021 17:00 debbys1802

Lily investigates which objects are attracted by a magnet. She tests a paper clip, a crayon, and a nail. She holds a magnet two centimeters away from the object being tested. Each time she tests an item, she uses a different magnet. In what way did she make a mistake setting up her investigation? She should have tested a total of 10 items.

She should have used the same magnet in each trial.

She should have tested only one item in her investigation.

She should have held the magnet a centimeter away from each item.

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