Final answer:
The most important feature in a preemployment test for a job that requires a high degree of accuracy and where mistakes can be dangerous and costly is attention to detail.
Step-by-step explanation:
When recruiting for a job that requires a high degree of accuracy and where mistakes can be dangerous and costly, the most important feature in a preemployment test would be attention to detail.
A test that assesses an applicant's attention to detail would evaluate their ability to notice and catch errors, follow precise instructions, and ensure accuracy in their work.
For example, the test could include tasks such as proofreading documents for errors, performing data entry with a high level of accuracy, or completing a complex task without making any mistakes.