Step 1: Understanding the Concept:
This matching task involves linking major textbooks on agroforestry with their respective authors.
Step 2: Detailed Explanation:
Let us analyze each book and its author:
(A) An Introduction to Agroforestry:
This seminal textbook was written by Dr. P. K. Ramachandran Nair (P. K. R. Nair), a globally recognized pioneer in agroforestry research.
Hence, (A) matches with (II).
(B) Agroforestry Principles and Practices:
This comprehensive text on Indian agroforestry was written by A. P. Dwivedi.
Hence, (B) matches with (IV).
(C) Text book of Agroforestry:
This textbook, widely used in undergraduate agricultural curricula, was written by D. S. Chundawat and S. K. Gautam.
Hence, (C) matches with (I).
(D) Agroforestry: Theory and Practices:
This textbook was compiled and written by A. J. Raj and S. B. Lal.
Hence, (D) matches with (III).
Step 3: Final Answer:
Matching the titles with their authors gives:
(A) - (II), (B) - (IV), (C) - (I), (D) - (III).
This matches Option (A).