I would say a because that is the only one that makes sense but I’m not 100% sure
The correct answer is amplitude
Four different things can happen when light hits an object
<span>The waves can be reflected or scattered off the object. </span>
<span>The waves can be absorbed by the object. </span>
<span>The waves can be refracted through the object. </span>
<span>The waves can pass through the object with no effect.</span>