Step 1: Understanding the Soil Types and Origins.
- (A) Loess: Loess is a type of soil that is deposited by wind, so it corresponds to (III).
- (B) Peat: Peat is organic material formed from decaying plants, and it is found in areas with abundant vegetation, making it correspond to (IV).
- (C) Alluvial soil: Alluvial soils are deposited by running water, so they correspond to (I).
- (D) Marl: Marl is a mixture of clay and calcium carbonate, and it originates from marine deposits, making it correspond to (II).
Step 2: Conclusion.
Thus, the correct matching is: (A) - (III), (B) - (II), (C) - (I), (D) - (IV), making option (1) the correct answer.
Final Answer:
\[
\boxed{1. \, (A) - (III), (B) - (II), (C) - (I), (D) - (IV)}
\]