Step 1: Understanding the Concept:
Bio-control agents are used to control weeds.
Different weeds have specific bio-control agents.
Step 2: Key Formula or Approach:
No specific formula.
Need to know the weed-bioagent associations.
Step 3: Detailed Explanation:
Orobanche is controlled by Phytomyza (A-IV).
Parthenium is controlled by Cassia tora (B-I).
Lantana camara is controlled by Teleonemia scrupulosa (C-II).
Cuscuta is controlled by Colletotrichum gloeosporides (D-III).
Thus, A-IV, B-I, C-II, D-III is the correct matching.
Step 4: Final Answer:
The correct matching is A-IV, B-I, C-II, D-III.
Hence, the correct option is (A).