Binding is necessary for event handlers in class components to prevent memory leaks. Without binding, the "this" keyword inside the event handler refers to the global context, not the component instance. This can lead to memory leaks as event handlers won't be properly cleaned up. By binding the event handler to the component instance, you ensure that "this" refers to the component, avoiding memory leaks.

One significant difference between JSX and HTML is that JSX supports custom components, which are reusable building blocks in React. While HTML supports JavaScript via inline scripts, this is not the primary distinction between JSX and HTML. JSX's primary advantage is its integration with React components and the ability to define custom ones.

You can integrate Web Workers with React's state management by using the postMessage API. This allows you to communicate between the main thread (React) and the Web Worker thread, enabling state updates and management. While Web Workers provide a way to run background tasks separately, they can still communicate with the main thread. The other options are not recommended approaches for integrating Web Workers with React's state management.

When performance is a concern due to frequent state updates, using Immutable State Management, such as Immer.js, allows for fine-grained control over re-renders. Immutable data structures help optimize rendering by only updating the changed parts of the state. Local Component State, while suitable for some cases, doesn't provide the same level of optimization for frequent updates. Redux can be used with memoization techniques to optimize re-renders, but it's the use of immutability that provides finer control in this context.

In this scenario, a Computed Property in MobX would be best suited. Computed properties automatically update whenever the observable data they depend on changes. By defining a computed property for the total count of completed tasks, you ensure it updates automatically when the completion status of tasks changes. It's an efficient way to derive data from observables.

In Redux, handling asynchronous logic is typically done using middleware like Redux-thunk. Redux-thunk allows you to write action creators that return functions instead of plain objects, enabling asynchronous operations like API calls within Redux. Redux-saga, Redux-logger, and Redux-router serve different purposes and are not used for handling asynchronous logic.

Immutability can optimize React's reconciliation process by reducing the need for shallow comparisons during updates. Since immutable data structures don't change, React can quickly determine if props or state have changed by comparing references, resulting in faster updates and improved performance, especially in large and complex React applications.

Higher-Order Components (HOCs) automatically pass props to the wrapped component. This can introduce potential naming collisions if the same prop name is used within the HOC and the wrapped component. Developers need to be aware of this and avoid naming conflicts when creating or using HOCs.

To store the previous state or props in functional components, you can use the "useRef" hook. The useRef hook allows you to create mutable references to DOM elements and can be used to store previous values. While the other hooks (useState, useEffect, useMemo) are essential in functional components, they serve different purposes.

When animating route transitions in a React application, the commonly used component from 'react-router-dom' to manage the different routes is the 'Route' component. The 'Route' component allows you to define which component should be rendered for a specific route, making it essential for navigation and route handling in React applications. The other options are not typically used for managing routes.