Which option best defines foundation as the base on which something is built?

• A. An organization that deals with social issues or projects
• B. The base on which something is built
• C. The underlying principle or basis
• D. The basic structure for something

Answer: (B)

Foundation is about the base or groundwork that supports something. In everyday use, it’s what a building sits on and what bears its weight, so describing foundation as the base on which something is built is the clearest, most direct meaning. While foundation can also mean an underlying principle or the basic structure in a more abstract sense, the prompt is pointing to the literal sense of a base, which makes this option the best fit. The other ideas—an organization, or a general structure, or an abstract principle—don’t capture the concrete base that supports or underpins something.