Test The Viable Commitment and the Confronting Question

1st QUESTION: What is the main objective of the "Viable Commitment" technique?

Because the person feels involved in the solution when the agreement is co-created
Because it implies a threat if it is not complied with
Because it is a faster and more direct technique
Because it communicates exclusively in writing

The generic question is more formal and polite
There is no significant difference between the two
The "Confrontational Question" is direct and returns the responsibility for confirmation
The generic question can only be used in writing