Final answer:
The correct answer is that USB-connected foot pedals are used by Healthcare Documentation Specialists to control transcription playback, enhancing transcription efficiency.
Step-by-step explanation:
The correct statement that describes the use of USB-connected foot pedals by the Healthcare Documentation Specialist (HDS) is c) USB foot pedals are used to control transcription playback.
Transcriptionists commonly use these pedals to start, stop, rewind, or fast-forward through the audio files they are transcribing without needing to take their hands off the keyboard. This allows for a more efficient transcription process, as it reduces the need for manual control with a mouse or keyboard.