When using monitoring by group members

A) The worker should decide what data to collect
B) The worker and the member should decide when to collect the data
C) The member decides how much data to collect
D) The member decides how to collect the data

When using monitoring by group members, the worker and the member should decide together when to collect the data. It is important for both parties to agree on a schedule to ensure that data is collected regularly and consistently. The worker should also provide guidance on what data should be collected and how it should be collected, but the member should have input in these decisions as well.