React Router v7 Best Practices Quick Reference Router Setup (Data Mode) : Framework Mode (Vite plugin) : Route Configuration Nested Routes with Outlets Dynamic Segments and Splats Key Decision Points Form vs Fetcher Use : Creating/deleting with URL change, adding to history Use : Inline updates, list operations, popovers - no URL change Loader vs useEffect Use loader : Data before render, server-side fetch, automatic revalidation Use useEffect : Client-only data, user-interaction dependent, subscriptions Gates (decision sequencing) Answer in order . Pass means the condition is true; pick the…