Concept:A patent gives legal protection to an inventor for a new invention or process.
Explanation:The machine for canning tomatoes is a new invention.
An inventor can protect this invention by obtaining a patent.
A patent grants the exclusive right to make, use, and sell the invention.
A trademark protects brand names or logos, not the machine itself.
Labelling or choosing a brand name does not protect the invention from being copied.
Only a patent prevents others from using the inventor’s creation without permission.
Answer:B. obtaining a patent