@Teja_K Please ask your questions in a single place at answers.ros.org as per our support guidelines. we try to keep discourse for announcements to the entire community.
You’re screenshot shows that you are using Zesty (Ubuntu 17.04) and not Xenial 16.04.3. Kinetic doesnt support any ubuntu distribution after 16.04 so it is expected that you cannot install it on Zesty, only Lunar provides binaries for Ubuntu Zesty. Please refer to REP 3 to know what platforms are supported for each ROS distributions