Answer :
Option D is correct. She can use constructive interference to generate a wave with an amplitude of 3.5 m.
What is a wave?
A wave is a phenomenon that flows across a material medium without leaving any lasting mark. Mechanical or electromagnetic waves can be used to classify them.
The wavelength of waves obtained by the interference is more than the two primary waves.
Hence Option D is correct. She can use constructive interference to generate a wave with an amplitude of 3.5 m.
To learn more about the wave refer to the link;
https://brainly.com/question/3004869