I think it is "A'' 'It moves along straight lines in air and changes direction when it enters water.
C.
hope that helped you!!!
Thank you for posting your question here at brainly. Below is Yoland's study:
<span>Yolanda is studying two waves. The first wave has an amplitude of 2 m, and the second has an amplitude of 3 m.
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I think the answer is "She can use constructive interference to generate a wave with an amplitude of 1.5 m."
The answer is C) <span>The higher frequencies of visible light were scattered by the colloid particles.</span>
