The correct answer is: b) Varied climatic zones.
Arunachal Pradesh is a state in north-eastern India. It is the largest state in the country by area, and is home to a diverse range of plant and animal life. The state’s varied climatic zones, ranging from tropical to alpine, are ideal for the growth of a wide variety of plants. The state is also home to a number of endangered species, including the snow leopard, the red panda, and the clouded leopard.
Arid conditions are not conducive to the growth of a wide variety of plants. Limited rainfall can also limit the growth of plants, as well as the availability of water for animals. Extreme temperatures can also be harmful to plants and animals.
Therefore, the correct answer is: b) Varied climatic zones.