If a component class expects a prop, you can give that component class ...

If a component class expects a prop, you can give that component class ...

• A. A PropType
• B. A PropName
• C. A PropValue
• D. A PropDefinition

Answer: (A)

PropType definitions are how a component communicates the props it expects. When a component class expects a prop, you attach a PropType to the component, describing the expected type (for example, a string or a number) and whether it’s required. This setup lets React check props at runtime during development and warn you if a prop is missing or has the wrong type, which helps catch bugs early. For example, you might define something like name as a string and age as a number, with name required. The other options don’t provide this built-in type validation mechanism, so they don’t serve the purpose of declaring and enforcing expected props.

PropType definitions are how a component communicates the props it expects. When a component class expects a prop, you attach a PropType to the component, describing the expected type (for example, a string or a number) and whether it’s required. This setup lets React check props at runtime during development and warn you if a prop is missing or has the wrong type, which helps catch bugs early. For example, you might define something like name as a string and age as a number, with name required. The other options don’t provide this built-in type validation mechanism, so they don’t serve the purpose of declaring and enforcing expected props.