Which two of the following data sources can be used for polling devices in device...

Comprehensive and Detailed Explanation From Exact Extract:

Device Studio supports the following data sources:

Calculated result from transformation of polled values: You can apply calculations (such as average, sum, transformation) to the raw polled data.

Polled value by a device on an object ID: Device Studio can directly poll an OID from a device and use its value for monitoring.

Night/day standard deviation and predicted/baseline values are not direct data sources in Device Studio.