Concept:The symptoms point to rinderpest, a viral disease, so the best control is prevention through vaccination.
Explanation:Watery discharge from the eyes and nostrils, sores in the mouth and nostrils, excessive saliva with an offensive odour, and severe bloody diarrhoea are all signs of rinderpest.
Rinderpest is caused by a virus.
Antibiotics are ineffective against viruses, so they cannot control this disease.
Deworming controls internal parasites, and dipping controls external parasites, but neither treats a viral infection.
Vaccination is the most effective measure to prevent the disease and stop its spread among animals.
Answer:B. Vaccinating animals