Which definition matches manifold?

• A. A guide book that tells one how to operate or use something
• B. A border or edge
• C. Plentiful, numerous
• D. The difference between cost of production and selling price

Answer: (C)

The main idea here is the meaning of manifold as a word: it is used to express a large number or variety of things. When someone says there are manifold possibilities, they mean there are many different options. So, the choice that best matches is the one that conveys plentiful or numerous.

That fits because manifold is a synonym for many or diverse. For example, you might encounter phrases like “manifold reasons,” “manifold opportunities,” or “manifold problems,” all signaling a wide variety or a lot of something.

The other options describe different words entirely: a guide book is a manual, not manifold; a border or edge is a margin or boundary; the difference between cost and selling price is profit or margin. These do not capture the sense of abundance or variety that manifold denotes.