Which type of bond is issued with a focus on securing private investment at airports?

The correct choice is Industrial Development Bonds. These bonds are specifically designed to attract private investment for public projects, including those at airports. They are often used to finance the construction of facilities that will be used by private companies but have a public benefit, such as improving infrastructure or economic development.

Industrial Development Bonds allow private companies to benefit from the lower interest rates typically associated with tax-exempt bonds. This makes them an attractive investment for businesses looking to expand or develop projects that could positively impact the local economy, such as airport facilities or services supporting air travel.

Understanding the private investment angle is key here, as Industrial Development Bonds facilitate funding that might not otherwise be available, thereby promoting collaboration between public interests and private enterprise in airport operations or developments.