iPad is locked.
A password is required to activate this device because its owner has used find my iPhone to link it to their apple id. If this is your device enter the apple id and password you used to set up iCloud.
iPad mini Wi-Fi
As the message indicates, you need to put in the Apple ID and password that you used to set up the iPad. If you got this iPad from someone else, you need to ask them to turn off activation lock before you will be able to use it. Directions can be found here: https://support.apple.com/en-us/HT201441
-AJ