Choose your answer before opening the explanation. This is a learning exercise, not a competency assessment.
A green patch appears on one bag. The first step is
- Spray a fungicide over the shelf
- Remove that bag from the room and record the details
- Raise the humidity
- Wait and see
See the answer and why
Remove that bag from the room and record the details Isolation stops spores spreading; the record lets you find the cause.

