I think it's low grade lime stone..
<span>Speak up more so people don't think you're rude</span>
Answer:
a. device administration
Explanation:
Device Administration is a powerful API feature on the Android framework which was first introduced in Android version 2.2. It offers some features at the system level that enables some other key features such as the storage on a device, remotely wiping or enforcing password policies.
It is also utilized in uninstalling your application from the device or to capture a picture by the use of camera when screen is lock.
Im not sure but i think its C at least two but once again im not sure hope this helps :)