The correct answer is: a) Alluvial soils.
Alluvial soils are the most common type of soil in Coastal Andhra Pradesh. They are formed by the deposition of sediments from rivers and streams. Alluvial soils are typically fertile and well-drained, making them ideal for agriculture.
Black soils are also found in Coastal Andhra Pradesh, but they are not as common as alluvial soils. Black soils are rich in organic matter and are well-suited for growing crops such as cotton and tobacco.
Red soils are less common in Coastal Andhra Pradesh than alluvial and black soils. Red soils are acidic and have poor drainage, making them less suitable for agriculture.
Laterite soils are the least common type of soil in Coastal Andhra Pradesh. Laterite soils are formed by the weathering of rocks in tropical climates. Laterite soils are typically infertile and have poor drainage.
In conclusion, the correct answer to the question “Coastal Andhra Pradesh is mainly characterized by:” is a) Alluvial soils. Alluvial soils are the most common type of soil in Coastal Andhra Pradesh. They are formed by the deposition of sediments from rivers and streams. Alluvial soils are typically fertile and well-drained, making them ideal for agriculture.