The correct option is
C ![](https://infinitestudent-migration-images.s3-us-west-2.amazonaws.com/_19af68ee90bcc5f6ffbfae0262156100a19268c520160721-20358-1q5qhao.png)
From the given VT diagram, we can see that
In process AB,
V≈T∴ Pressure is constant (As quantity of the gas remains same)
In process BC, V = constant and in process CA, T = constant
∴ These processes are correctly represented on PV diagram by graph (c).