Which scenario would benefit MOST from using React.memo?
A component that re-renders frequently because its parent re-renders, but its props rarely change would benefit most from React.memo. This is precisely the use case React.memo was designed for - preventing unnecessary re-renders of components when their props haven't changed. The memoization allows the component to skip rendering work when its inputs are the same, which is particularly valuable when the component has expensive rendering logic or many child components.