Match List I (Animal Health Practices) with List II (Purpose):

List I	List II
a. Dipping	I. Disinfectants
b. Drenching	II. Vaccines
c. Spraying	III. Internal parasites
d. Injection	IV. External parasites

Correct option is D

✅ Matching with scientific use:
Dipping → (IV) External Parasites
Entire animal (usually sheep/cattle) is dipped into a medicated bath.
Controls ticks, mites, lice, etc.
Drenching → (III) Internal Parasites
Oral administration of anthelmintic drugs to kill internal worms.
Spraying → (I) Disinfectants
Applied on body surfaces, barns, or equipment for sanitation.
Injection → (II) Vaccines
Given subcutaneously/intramuscularly for immunization.
✔️ Correct Matching:
· a–IV
· b–III
· c–I
· d–II → Option (d)