A patent is an official right to use an invention. Thus, the correct answer is B.
What is patent?
A patent refers to copyright or access rights provides to any individual for his invention. These access rights help him to avoid any infringement related to the concept.
This will help an innovator to protect their invention from copying or duplicacy and if any breach of policy is found then strict actions along with heavy penalities will be applied. The lifespan of this protection is 20 years after that one has to renew it.
Therefore, option B the official right to use an invention is the correct answer.
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