By which process do plants lose their water to the atmosphere

Transpiration is the process using which plants lose their water to the atmosphere.

Step-by-step explanation:

Transpiration is the process using which plants lose their water to the atmosphere.

During transpiration:

In a nutshell, during transpiration process, there is a water movement through a plant, ultimately water getting evaporated from certain parts (aerial) like stems and leaves etc.

Therefore, we conclude that transpiration is the process using which plants lose their water to the atmosphere.

i would have to say it is c.