The correct answer is: B) Laterite soil.
Laterite soil is a type of soil that is rich in iron and aluminum oxides, but low in nutrients such as nitrogen and phosphorus. It is formed in tropical and subtropical regions with high rainfall and temperatures. The high rainfall leaches away the nutrients from the soil, while the high temperatures cause the iron and aluminum oxides to precipitate out of solution. This leaves behind a soil that is red, yellow, or brown in color and is very poor for agriculture.
Alluvial soil is a type of soil that is formed from the deposition of sediments by rivers. It is typically very fertile and is often used for agriculture. Black soil is a type of soil that is formed from the weathering of volcanic rocks. It is also very fertile and is often used for agriculture. Red soil is a type of soil that is formed from the weathering of granite rocks. It is less fertile than alluvial soil and black soil, but it can still be used for agriculture.
In conclusion, laterite soil is the least fertile soil type and often requires additional fertilizer input.