National defence, roads and government administration are examples of

1. The market cannot supply some goods through ordinary exchange. 2. Their benefits are available to everyone, not just one buyer. 3. Such goods are **public goods**, and the government provides them. 4. Clothes, cars and food are private goods, since one person's consumption excludes another's. _Source: syllabus Introductory Macroeconomics, Ch 5 "Government Budget and the Economy", section 5.1.1 Objectives of Government Budget_