Respuesta :
Answer:
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.
Hope this helps! Brainliest Please! ;p
C. Added insulation would increase absorption
this is evident by the other answer’s explanation
this is evident by the other answer’s explanation