Final answer:
To correct a mistake in a paper-based prehospital care report, draw a single line through the term 'left' and write 'right' next to it, without using White-Out or black ink.
Step-by-step explanation:
When correcting an error on a paper-based prehospital care report, the correct step would be to draw a single line through the incorrect term so that it remains legible, and then to write the correct term next to it. In the scenario described, you should draw a single line through the term “left” and write the word “right” next to it. This method maintains the integrity of the document and ensures that all alterations are transparent. It is important not to use White-Out or black ink to cover the error, as this could be seen as tampering with the document.