Student or Learner
"Sally Dowler's voice rose as she told the inquiry what happened after a period in which every time she rang her missing daughter's mobile phone, it said the mailbox was full."
How does one tell an inquiry something? It is natural to tell a person something. But an inquiry is an activity.
An inquiry/enquiry can be an official investigation into a matter. If you give evidence to the members of the board of enquiry, you can be said to 'tell the enquiry' something, just as you can 'tell the court' something duing a trial.