Why is the trait failing to capture any data?

A client notices that the traits set up to collect the new attributes in the Natural Match file onboarded last week still do not show any data. After verifying that the trait was set up as an Onboarded Trait, the architect checks the Onboarding Status Report to troubleshoot why no data is showing in AAM for that trait.

– Stored Records: 0

– Format Error: 0

– Invalid AAM ID: 0

– No Trait Realized: 123,045

– No Matching AAM ID: 4,121

Why is the trait failing to capture any data?
A . Customer has not visited web property
B . Incorrect Key-Value Pair in the uploaded file
C . Incorrect profile merge rule used
D . Experience Cloud ID is not set up properly