The correct answer is Option 2: wireless communication technology.

Project Loon is an initiative developed by Google`s parent company, Alphabet Inc., that aims to provide internet access to remote and rural areas using high-altitude balloons. These balloons are equipped with wireless communication technology to deliver internet connectivity to underserved and disconnected regions.

The project works by launching a network of high-altitude balloons into the stratosphere, which then form a mesh network to provide internet coverage to areas that lack traditional internet infrastructure. The balloons are designed to stay aloft for extended periods of time, powered by solar panels that charge the onboard batteries during daylight hours. This enables them to provide continuous internet coverage even in remote locations with limited access to power sources.

The balloons are equipped with various wireless communication technologies, including LTE (Long-Term Evolution) and other advanced radio frequency systems, which enable them to provide internet connectivity to devices on the ground. Users in the covered areas can connect to the internet using standard LTE-enabled devices, such as smartphones or tablets, and access online services, information, and communication tools.

Project Loon has been used in several real-world deployments, including disaster recovery efforts in Puerto Rico after Hurricane Maria in 2017, and rural connectivity trials in countries like Kenya and New Zealand. It has shown promising results in extending internet access to underserved communities, bridging the digital divide, and empowering people with information and communication tools for social and economic development.

In conclusion, Project Loon is a wireless communication technology initiative that uses high-altitude balloons to provide internet access to remote and rural areas, making Option 2 the correct answer.