Step 1: Concept
Named organic reactions for alkyl/aryl halides.
Step 2: Meaning
Matching reactions to products: Swarts (fluorides), Finkelstein (iodides), Wurtz-Fittig (alkylation of aryl halide), Sandmeyer (diazonium salts).
Step 3: Analysis
Swarts $\rightarrow$ $C_2H_5F$ (III). Finkelstein $\rightarrow$ $C_2H_5I$ (I). Wurtz-Fittig $\rightarrow$ Alkylbenzene (II). Sandmeyer $\rightarrow$ Bromobenzene (IV).
Step 4: Conclusion
Matches are A-III, B-I, C-II, D-IV.
Final Answer: (B)