____ allow(s) users with mobility issues to control the computer with their voice. head pointers speech…

Brief Explanations:

Speech input software interprets spoken words as commands or input for the computer, enabling users with mobility issues to control the computer via voice. Head - pointers track head movement, tracking devices track movement in general, and text - to - speech converts text into spoken words, none of which are for voice - controlled computer operation.

Answer:

B. Speech input software