Photography is your answer
Answer:
Fluorescent lamp and a CCD array as a light source and detector. Manufacturers of flatbed scanners recently replaced the fluorescent lamp by light emission diodes (LED) as a light source.
Explanation:
This is what a website said so I hope it helps but if it doesn’t then I’m sorry :/ and I would get someone else’s opinion!!!
Harmony, as it is the only answer that includes multiple sounds at the same time.
