Mohit's response indicates an awareness of the importance of web accessibility and responsive design, mentioning the use of React components and flexbox. However, the response is disorganized and lacks specific details on how web accessibility standards were implemented in the project. He could improve by providing clear examples of how he used semantic HTML, ARIA attributes, ensured keyboard navigation, and maintained color contrast and text readability, as outlined in the benchmark response. Additionally, mentioning OOP in this context is not relevant and may indicate a misunderstanding of the question, which was specifically about HTML5 and CSS3.