Rita was having cough, cold, fever and body ache. The doctor that she consulted could not identify the exact pathogen causing the disease. Which one of the following antibiotic he would have suggested?

The correct option is B Amoxicillin
Amoxillin is a broad spectrum antibiotic. Broad spectrum antibiotics work against a wide range of microbes. They are usually prescribed when the exact pathogen causing a disease is unknown. Ampicillin and tetracyline are few other examples of broad spectrum antibiotic.
Penicillin, gentamycin and erythromycin are narrow spectrum antibiotic. They are prescribed when the exact pathogen causing a disease is known.