Final answer:
Sound-absorbing materials, sound masking systems, and ceiling design are ways of providing acoustic control within a shared reading room.
Step-by-step explanation:
The correct answer is d) All of the above.
Acoustic control within a shared reading room can be achieved using various methods. Sound-absorbing materials for wall, floor, and ceiling finishes help to absorb sound waves and reduce sound reflection. Sound masking systems emit low-level background noise to mask or cover up unwanted sounds. Ceiling design, such as adding acoustic tiles or panels, can help in reducing sound reverberation and enhancing speech intelligibility.
Therefore, all the options - sound-absorbing materials, sound masking systems, and ceiling design - are ways of providing acoustic control within a shared reading room.