What effect would added insulation, in a wall, have on sound waves? A. Added insulation would increase reflection. B. Added insulation would increase transmission. C. Added insulation would increase absorption. D. Added insulation would increase reverberation.

D. Added insulation would increase reverberation.

Explanation:

Adding insulation in the wall cavity has the effect of increasing the resistance to sound waves moving through the otherwise empty space from one room to the next, absorbing sound energy in the process.

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