From the diagram above an ideal gas can be represented by

Explanation: For an ideal gas, the product \(PV\) should remain constant at a given temperature, according to Boyle’s law (\(PV = \text{constant}\)). In a graph of \(PV\) versus \(P\), an ideal gas is represented by a horizontal line, because \(PV\) does not change with pressure.

Looking at the diagram:

• L, K, M: these curves slope upward or downward, meaning \(PV\) changes with pressure (behavior of real gases).
• N: this line is flat (horizontal), showing that \(PV\) is constant with respect to pressure → ideal gas behavior.

Final Answer: N