Final answer:
When the mobile browser asks for permission to access the microphone and camera, the two options offered are Allow and Block.
Step-by-step explanation:
When the mobile browser asks for permission to access the microphone and camera, the two options offered are Allow and Block. These options determine whether the browser can use the microphone and camera or not. By selecting 'Allow', the browser is granted permission to access the microphone and camera, while selecting 'Block' denies the access.