Final answer:
The option that will most likely help people who are hard of hearing access products is tools for adjusting the volume and pitch of audio materials.
Step-by-step explanation:
The option that will most likely help people who are hard of hearing access products is A. Tools for adjusting the volume and pitch of audio materials. These tools, such as hearing aids and assistive listening devices, help individuals customize the sound to their specific hearing needs. For example, someone with high-frequency hearing loss may need to adjust the pitch to hear certain sounds clearly.
In contrast, option B (a writing system consisting of raised dots that represent letters) is Braille, which primarily benefits individuals who are blind or visually impaired, not those who are hard of hearing.
Option C (printed materials with smaller-than-normal text) is more useful for individuals with good hearing but poor vision, as it helps them read the text more easily. Similarly, option D (devices with larger-than-normal screens and buttons) is designed for individuals with visual impairments, not hearing impairments.
Learn more about Assistive technology for people who are hard of hearing