Please help me with this question

Dear student,
Please find below the answer:

The process R in the above-given image is called condensation (change of steam into water).
The process T in the above-given image is called evaporation (change of water into water vapour).

If we talk about evaporation, it is considered as a reversible physical change. 

A reversible change is the one in which a substance that is undergoing the change can be recovered in its original form.

Hope this clears your doubt.
Regards.