Answer:
Two critical areas that differentiate agile from waterfall development are:
Fast feedback
Agile delivers working software frequently, allowing for fast feedback and iteration. Waterfall has longer phases, resulting in slower feedback loops.
Incremental delivery of value
Agile breaks down large projects into smaller increments and delivers working software frequently. Waterfall aims to deliver the completed project at the end, resulting in possible lack of working software for long periods.
So the key differentiators are:
Fast feedback
Incremental delivery of working software
The other options are not primary differentiators or are not as fundamental as feedback and incremental delivery.
Let me know if you have any other questions!
Step-by-step explanation: