Step 1: Understanding the Concept:
This question covers historical events in agricultural science, plant pathology, and rural development programs in India.
Step 2: Detailed Explanation:
Let us match the items systematically:
- (A) E D Spratt:
E.D. Spratt is a well-known agricultural scientist who co-authored research works on agricultural nutrient management, closely associated with the field of "Soil fertility and plant nutrition".
Thus, (A) matches with (III).
- (B) Bordeaux mixture:
Bordeaux mixture is a classical fungicide discovered accidentally in 1882 by Pierre-Marie-Alexis Millardet in Bordeaux, France, to control downy mildew in grapevines. It consists of copper sulfate and hydrated lime.
Thus, (B) matches with (IV).
- (C) JRY (Jawahar Rozgar Yojana):
Jawahar Rozgar Yojana was a major rural employment generation program launched on April 1, 1989 by merging the National Rural Employment Program (NREP) and the Rural Landless Employment Guarantee Program (RLEGP).
Thus, (C) matches with (I).
- (D) RLEGP (Rural Landless Employment Guarantee Programme):
RLEGP was launched on August 15, 1983, with the objective of providing guaranteed employment to at least one member of every landless rural household.
Thus, (D) matches with (II).
Matching summary:
(A) $\rightarrow$ (III), (B) $\rightarrow$ (IV), (C) $\rightarrow$ (I), (D) $\rightarrow$ (II).
Step 3: Final Answer:
The correct option is (B).