How does Sitecore Helix propose handling code changes over time?

The correct approach proposed by Sitecore Helix for handling code changes over time is to encourage the modularization of code. This principle is foundational to Helix because it promotes a clean separation of concerns, allowing developers to break down the application into smaller, manageable pieces.

By creating modular components, teams can work on different parts of the application independently, which simplifies updates and reduces the risk of introducing bugs when changes are made. This modular architecture is also beneficial for maintaining and scaling applications, as new features or updates can be integrated more seamlessly. Furthermore, modularization aligns with best practices in software development by supporting reusability and maintainability.

The other options do not align with the principles set forth by Helix. Creating single monolithic modules would actually complicate updates and make it difficult to manage changes, while enforcing strict guidelines could hinder flexibility and innovation. Automatic update mechanisms may provide some convenience but do not facilitate the structured approach to modularization that Helix advocates.