Which statement about ReactDOM.render is accurate?

Which statement about ReactDOM.render is accurate?

• A. It only updates the virtual DOM and does not touch the real DOM.
• B. It compiles JSX to JavaScript at runtime.
• C. It renders a React element into the DOM.
• D. It is used to define routes in a React app.

Answer: (C)

Rendering a React element into the DOM is what ReactDOM.render does. It takes a React element (for example, <App />) and a DOM node (like document.getElementById('root')) and renders the UI into that node. This is the bridge between React’s virtual element tree and what you actually see in the browser, so React can update the DOM efficiently when things change. JSX isn’t compiled by this function at runtime; JSX is transformed to JavaScript by a tool like Babel during build or at runtime, while ReactDOM.render’s role is to mount the prepared element tree into the DOM. It isn’t used to define routes; routing is handled by libraries like React Router, which render their own components into the app. For example: ReactDOM.render(<App />, document.getElementById('root')).

Rendering a React element into the DOM is what ReactDOM.render does. It takes a React element (for example, ) and a DOM node (like document.getElementById('root')) and renders the UI into that node. This is the bridge between React’s virtual element tree and what you actually see in the browser, so React can update the DOM efficiently when things change. JSX isn’t compiled by this function at runtime; JSX is transformed to JavaScript by a tool like Babel during build or at runtime, while ReactDOM.render’s role is to mount the prepared element tree into the DOM. It isn’t used to define routes; routing is handled by libraries like React Router, which render their own components into the app. For example: ReactDOM.render(, document.getElementById('root')).