howwemakewaves mainx

Martha says, "Sound is made up of waves that humans can't see, but if we can somehow make waves to send to ships out of the items we have on the beach, they might wonder what their ship's instruments are picking up. What items could we use that we have here?"

What do you choose?
Coat hanger, Battery, Life vest

Bottle, Vest, Radio

Battery, Radio, Coat hanger

Bottle, Coat hanger, Battery

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