Final answer:
The categories of therapeutic drugs are antibiotics, antivirals, antifungals, and antiparasitics, each designed to treat different types of infections caused by distinct pathogens.
Step-by-step explanation:
Therapeutic drugs are categorized based on their pharmacological effects and therapeutic application. The correct categories of therapeutic drugs according to the student's question are: antibiotics, antivirals, antifungals, and antiparasitics. These drugs are designed to treat various types of infections caused by different kinds of pathogens, including bacteria, viruses, fungi, and parasites.
Antibiotics are used to treat bacterial infections, not to be confused with antivirals that specifically target viruses. Antifungals are medicine used to treat fungal infections, while antiparasitics help combat infections caused by parasites. It's crucial to use these medications correctly to ensure effectiveness and minimize the development of resistance.