Concept:
Different cereal products undergo distinct processing methods.
Step 1: White Rice (A).
• Obtained by milling and polishing
So, A $\rightarrow$ IV.
Step 2: Maida (B).
• Fine flour from wheat endosperm
So, B $\rightarrow$ I.
Step 3: Parboiled Rice (C).
• Prepared by steaming followed by drying
So, C $\rightarrow$ III.
Step 4: Breakfast Cereals (D).
• Produced by extrusion or flaking
So, D $\rightarrow$ II.
Step 5: Final matching.
\[
A-IV,\; B-I,\; C-III,\; D-II
\]
Final Conclusion:
Option (3) is correct.