Niccolo is invited to help a program where, even though not mandated by the external environment, management requires teams to make big, up-front, and detailed scope commitments for every release.

What three things can Niccolo do to best coach the decision-makers? (Choose three.)

Illustrate the power of feedback in content decision-making

Explain that too much up-front detail demotivates Product Owners as they have almost nothing to do afterwards

Emphasize the value of 'responding to change' from the Agile Manifesto

Satisfy the immediate need and improve later

Explain the 'understand and exploit variability' principle of product development flow

Explain the benefits of releasing at the end of the Program Increment (PI)

I don't understand the "understand and exploit variability' principle of product development flow" is this related?