Red soils in Kerala are characterized by their:

The correct answer is b) Low fertility.

Red soils are characterized by their low fertility. They are also known as lateritic soils. They are formed in tropical and subtropical regions with a high rainfall. The high rainfall leaches the nutrients from the soil, making it less fertile. Red soils are also acidic, which further reduces their fertility.

Option a) is incorrect because red soils are not highly fertile.

Option c) is incorrect because red soils are not highly acidic.

Option d) is incorrect because red soils do not have a high presence of clay.