Concept:The legal right that protects creative works such as books, plays, films, and software is called copyright.
Explanation:Copyright gives the creator or owner the exclusive right to control the production, distribution, and sale of their original creative work.
Books, plays, films, and software are all examples of creative or intellectual works protected by copyright.
The other options do not fit: a trade mark protects brand names/logos, and a patent protects inventions.
Answer:B. copyright.