Match List I (Diseases) with List II (Symptoms):

List I (Disease)	List II (Symptoms)
a. Foot and mouth disease	I. Extension of one leg forward and the other backward
b. Mastitis	II. Animal walks in circle
c. Marek's disease	III. Blisters in the mouth
d. Ketosis	IV. Hot, swollen, painful udder

Correct option is B

a → III, b → IV, c → I, d → II
Let’s match and explain:
a. Foot and mouth disease → III. Blisters in the mouth �� Foot and mouth disease is characterized by the appearance of blisters inside the mouth and on the feet of animals. ✅ Correct match.
b. Mastitis → IV. Hot, swollen, painful udder �� Mastitis causes inflammation of the udder, resulting in a swollen, hot, and painful udder. ✅ Correct match.
c. Marek's disease → I. Extension of one leg forward and the other backward �� Marek's disease is a viral infection that affects poultry, leading to neurological symptoms such as leg paralysis. ✅ Correct match.
d. Ketosis → II. Animal walks in circle �� Ketosis is a metabolic disorder that affects dairy cows, often causing behavioral changes such as circling or uncoordinated movement. ✅ Correct match.
✅ Option (B) सभी मिलानों के अनुसार बिल्कुल सही उत्तर है।