Final answer:
Dynamic content in e-commerce emerged in the Second Generation, corresponding with the advent of Web 2.0 around 1999, which emphasized user participation and interactivity.
Step-by-step explanation:
The concept of dynamic content, where a web page changes based on factors such as time and date, user profile, or browser location, is typically associated with the emergence of Web 2.0, which is often thought to have begun around 1999. This era focused on user participation and the transition from static to dynamic and interactive web experiences.
E-commerce platforms also evolved during this phase, with enhanced user interactivity becoming a key feature. Therefore, the generation of e-commerce where dynamic content became prominent would be the Second Generation, corresponding with the advent of Web 2.0. This era saw significant changes in how users engaged with online content and platforms like social media, as well as transformative shifts in online shopping experiences with sites like Amazon.