To which of the following does copyright protection not apply

A. Inventions
B. Images
C. Sounds
D. Video
My answer is c

Nope.

http://www.uspto.gov/trademarks-getting-started/trademark-basics/trademark-patent-or-copyright

I'm not really sure of my answer but my answer is a

You're right. Inventions are covered under patent laws, not copyright law.

Copyright protection does apply to images, sounds, and videos. However, it does not apply to inventions. Copyright law is concerned with protecting original works of authorship, which includes literary, artistic, musical, and other creative expressions. Inventions, on the other hand, are protected by patents, which are a different form of intellectual property. Therefore, the correct answer would be A. Inventions, as copyright protection does not apply to them.