Question

To produce sound, an object must be ____.

Multiple choice question.

A)
moving


B)
heated


C)
in a gas


D)
vibrating

Answer 1

your answer is option d

hope it will help you

thanks~

kamina op bolte

✌✌✌✌

Answer 2

• 
  `\sf \green{ vibrating}`

To produce sound, an object must be vibrating.

Hope Helps~