Identification of Mandatory Dependencies is done during which of the following process:

A.
Sequence Activities

B.
Develop Schedule

C.
Define Activities

D.
Estimate Activity Durations

Explanation:
Dependencies that are directly related to the nature of the work being performed. This is known as hard dependency or hard logic. This is also referred as Mandatory Dependencies .
This dependencies will be used duing the Project Planning specifically on Activity Sequencing in Time Management.

Purchase the Server, Install Operating System, Install and configure Patches and finally install the Required Software are examples of mandatory dependencies. The nature of the work itself dictates the order in which the activities should be performed.