সঠিক উত্তর হচ্ছে: Amazon basin
ব্যাখ্যা:
The highest annual precipitation occurs in Amazon basin. Relative to other large river basins in the world the Amazon receives high levels of rainfall annually. The tropical rainforest that occupies a large proportion of the basin is supported by high amounts of rainfall, where on average annual rain fall is over 3,000 millimetres.