Question

Technique used to _____ requirements is backlog grooming

Answer 1

The Answer is : 

    The technique used to plan product requirements is Backlog Grooming.

   Backlog grooming is the document the backlog of the undelivered functions that were demanded by the customer. The developer or contractor maintains a list of backlogs not yet completed or delivered. The product planning team periodically checks this. They want to track the delivery of the requirements as the customer wanted.
 
   It is not possible to deliver the customer requirements immediately. There is a delay in delivery to the customer. So backlog grooming is essential. 

Answer 2

it is plan product requirements