Since a construction company began issuing high-quality safety harnesses to workers at its sites, the number of falls from height entered in its records has not gone down; if anything it has risen slightly. Which of the following, if true, best explains this outcome?

The record counts falls, not injuries. Better protection encourages workers to attempt riskier work, so more falls occur, and because the harness catches them these falls are logged as events without becoming injuries. The count can therefore rise while safety improves. Cost, wind and workforce size leave the relationship between protection and the number of logged falls unexplained.