What type of lines are designed specifically for businesses in property-casualty insurance?

The correct choice is the one that refers specifically to insurance offerings tailored for the needs of businesses rather than individual consumers. Commercial lines of insurance encompass a variety of coverage options aimed at protecting businesses against specific risks they face, such as property damage, liability, and business interruption. This category includes policies like commercial property insurance, general liability insurance, workers' compensation, and commercial auto insurance, among others.

In contrast, personal lines are designed for individual consumers and include products such as homeowners and personal auto insurance, which cover personal assets rather than business operations. Casualty lines primarily deal with liability coverage related to injuries or damages caused by an individual or business, but they are often part of broader commercial or personal lines. Individual lines is not a recognized category within property-casualty insurance terminology. Therefore, focusing on businesses and their specific coverage needs clearly identifies commercial lines as the correct answer.