Which of the following is a wireless assistive technology device used particularly for students with hearing loss that keeps the teacher's voice at an audible level, reduces background noise in the classroom, and creates a more inclusive classroom environment for the students?

Cochlear implants are medical devices surgically implanted to provide a sense of sound to individuals with severe hearing loss. While they can significantly improve hearing ability, they are not wireless assistive technology devices used in classroom settings; rather, they function as permanent solutions for hearing impairment, lacking the specific classroom-focused features of FM systems.

Text-to-speech software converts written text into spoken words, primarily assisting individuals with reading difficulties or visual impairments. Although it can aid in accessibility, it does not specifically enhance the auditory experience in real-time classroom interactions or address hearing loss directly in the same manner as an FM system, which amplifies live speech.

An audio recorder captures sounds and can be used for various purposes such as note-taking or recording lectures. However, it does not provide immediate auditory support, nor does it actively enhance the clarity of a teacher's voice in a noisy environment, which is essential for students with hearing loss during live instruction.