Final answer:
According to Tuckman's Stage Model, groups go through separate, orderly phases in their development, while punctuated equilibrium refers to groups oscillating between several phases or being in several phases at once.
Step-by-step explanation:
The answer to the question is d-storming; norming.
The question is asking for the groups that go through separate, orderly phases in their development and for the groups that oscillate between several phases or may be in several phases at once.
According to Tuckman's Stage Model, groups go through separate, orderly phases in their development. These phases are forming, storming, norming, and performing. So, the correct option for the first part of the question would be d-storming; norming.
As for the groups that oscillate between several phases or may be in several phases at once, this refers to the concept of punctuated equilibrium. In punctuated equilibrium, groups undergo rapid change followed by periods of relative stability. So, the correct option for the second part of the question would be b-punctuated equilibrium; Tuckman's stage model.