Final answer:
If an individual with technical knowledge or training injures someone while working, they would need professional liability insurance.
Step-by-step explanation:
If an individual that is expected to have extensive technical knowledge or training in a particular area of expertise makes a mistake while working and injures someone physically, they would need professional liability insurance. Professional liability insurance, also known as errors and omissions (E&O) insurance, is designed to provide protection for professionals in case they make a mistake or are negligent in their professional duties. This type of insurance can cover legal fees, settlements, and judgments if a professional is found liable for causing harm or damage.