Which tool is described as listening devices (enhance sounds)?

• A. Seismic devices
• B. Listening devices
• C. Cameras (fiber optics)
• D. Thermal imagers

Answer: (B)

The idea here is recognizing tools designed to hear and amplify audio. Listening devices are built to hear and record sound, often using highly sensitive microphones and amplification to make faint noises audible. This makes them the best fit for the description of “enhance sounds.” Seismic devices detect ground vibrations rather than audible sound, so they’re not about listening to audio. Cameras that use fiber optics capture visual information, not sound, and thermal imagers detect heat differences to form images rather than audio signals. So the tool described as listening devices that enhance sounds is the one specifically designed to hear and amplify audio.