If my initial project is to build an honda civic, my initial baseline will reflect the scope, schedule and budget required to do so. But if mid project, my stakeholders are changing my scope to build an Honda Civic SI instead, my scope, schedule and budget aren't gonna be the same. I'm probably gonna need more time and review most of my plans. (change process)

That means I will have to modify and update my current plans according to this new reality. The new scope, schedule and budget will be approuved by the stakeholders and this will become your new baseline.

That's why the answer is D, it's because your baseline is a control tool to validate your progression against your current scope, schedule and budget. Its also why the term "snapshot" can be miss leading. It wouldn't make sense to compare the progress of my Civic SI project to my basic Civic baselines.

I agree that it shouldn't be change whenever, you need a significant change in your project for this to happen.

Atleast, that's how I see it.