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Question:

Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a unit with R-410A. What must be done before your recovery unit can be used to recover R-410A?

A All of these.
explanation

Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a unit with R-410A. You have to comply with the following before your recovery unit can be used to recover R-410:
The recovery unit must be EPA-certified for use with R-410A.
The recovery tank must be designed for the pressure of R-410A.
The filter and lubricant in the recovery unit must be changed and the recovery unit must be evacuated.

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