The correct option is (c).
Explanation
The Amazon Basin is located in the equatorial region, stretching directly along the equator. Consequently, it experiences an Equatorial type of climate, which dictates the growth of dense tropical evergreen forests (Selvas).
Statement-wise Analysis:
- Statement 1 is Correct: The region is characterized by a hot and wet climate throughout the year. Due to its proximity to the equator, there is no distinct dry season, and the area receives heavy convectional rainfall almost daily.
- Statement 2 is Incorrect: While day temperatures are indeed high, the humidity is extremely high, not low. The combination of high heat and high moisture makes the weather sticky and uncomfortable during the day.
- Statement 3 is Correct: At night, the temperature drops significantly compared to the daytime peak, providing some relief from the heat. However, the humidity remains high, maintaining the damp conditions typical of rainforest environments.
Key Takeaway:
The Amazon Basin features an equatorial climate with uniformly high temperatures, heavy annual rainfall, and very high humidity levels both during the day and at night.