What is the significance of a web browser cookie?

A web browser cookie plays a significant role in enhancing user experience by storing user preferences, which streamlines access to websites. When a user visits a site, cookies are created to remember specific details such as login information, language settings, and personalized content preferences. This means that the next time the user visits the same site, the cookie allows the website to recognize them and apply their saved preferences, leading to a more customized and efficient browsing experience.

The other options do not accurately describe the primary function of cookies. They do not inherently enhance a computer's storage capacity or accelerate website loading times. Additionally, while cookies may contribute to user login processes that can be part of a secure experience, they do not directly secure data transmission, which is typically handled by different protocols and measures like HTTPS.