​Which of the following is an antibiotic?​

Correct option is B

The correct answer is Streptomycin.

Streptomycin:

• Streptomycin is an antibiotic used to treat various bacterial infections.
• It is part of the aminoglycoside class of antibiotics and works by inhibiting protein synthesis in bacteria, which ultimately kills them.
• Streptomycin is commonly used in the treatment of tuberculosis and other infections caused by susceptible bacteria.

Additional Information

• Sodium bicarbonate: Also known as baking soda, it is a chemical compound used as a leavening agent in baking and has various other household and medicinal uses, but it is not an antibiotic.
• Alcohol: While alcohol can be used as a disinfectant to kill bacteria on surfaces or skin, it is not classified as an antibiotic.
• Yeast: Yeast is a type of fungus used in baking and fermentation processes, but it has no antibiotic properties.