Opening the swimming pond

Source A: an original contemporary non-fiction-style account.

I arrived at the outdoor swimming pond before seven to help with the morning checks. The supervisor read the water temperature while I counted the rescue equipment and checked that the changing-room doors opened freely. A notice at the entrance explained that the shallow section would remain closed because a handrail was being repaired. The rest of the pond was due to open at eight, after the supervisor had completed the safety checklist.

A regular swimmer arrived early and asked whether she could go in immediately. I explained that the checks were not finished and directed her to the benches outside. She waited there with a flask. At eight, the supervisor removed the rope across the main entrance. I stayed at the desk to check membership cards rather than entering the water myself. The first hour passed quickly. I had imagined volunteering would mean spending more time swimming; that morning it meant making sure other people could begin their swim properly.

Refer to the whole of Source A. Choose the four true statements below. Write their four letters in the answer box. Choose no more than four; if more are given, only the first four distinct letters will be marked.