Q. Which of the following human races inhabits in China, Mangolia and Japan ?

Correct Answer: c) Mongoloid

Explanation: The Mongoloid race is primarily associated with East Asia, including regions such as China, Mongolia, and Japan. This classification is based on physical characteristics and anthropological studies.

The Australoid race is linked to regions like Australia and parts of South Asia, the Negro race (now more appropriately referred to as people of African descent) is associated with Africa, and the Nordic race is linked to Northern Europe. Therefore, the correct answer is Mongoloid, as it corresponds to the populations inhabiting China, Mongolia, and Japan.