Final answer:
The subject of this question is Biology, and it is about the different forms of drug administration including tablets, capsules, and suppositories.
Step-by-step explanation:
The subject of this question is Biology. The question is related to the route of administration for drugs, which is an important consideration in drug therapy. The different solid drug forms mentioned in the question, such as tablets, capsules, and suppositories, are examples of how drugs can be administered. Tablets are solid forms of drugs that are ingested orally, capsules are also ingested orally but have a gelatin shell, and suppositories are solid drug forms that are inserted rectally.