Which of the following is not a supported framework for capturing async web requests?

The question asks which framework is not supported for capturing asynchronous web requests. Understanding the capabilities of each framework is key.

React, as a widely adopted JavaScript library for building user interfaces, primarily focuses on the view layer and can effectively manage asynchronous requests via various methods, such as hooks or lifecycle methods. React's architecture allows it to work seamlessly with asynchronous data fetching, making it a suitable choice for applications that require capture and management of async operations.

On the other hand, AngularJS, Backbone.js, and jQuery all have built-in support or established patterns for handling asynchronous requests. AngularJS, with its two-way data binding and service integrations, facilitates asynchronous data operations efficiently. Backbone.js uses models and collections to manage asynchronous data, while jQuery provides straightforward AJAX functions to handle async calls.

Given that React does support async web requests, the focus shifts to understand the other options in the context. Therefore, it seems that the answer indicating React does not support async web requests lacks alignment with its established functionalities and capabilities.