Which of the following is the starting medicine for tuberculosis?

Correct option is B

Answer: (b) Isoniazid
Explanation: Isoniazid is one of the cornerstone first-line anti-tubercular medications. It is typically used in combination with other drugs such as rifampicin, pyrazinamide, and ethambutol as part of the initial intensive phase of tuberculosis treatment. The other options listed—PAS, Streptomycin, and Amikacin—are considered second-line drugs or used in cases of drug resistance and are not the standard initial therapy for TB.