The table gives data about four substances. Which substance has particles in a disorderly arrangement at room temperature?

The correct answer is

Let us see the following table about melting and boiling points of four substances A, B, C and D respectively.

From the above table it is clear that substance A has low melting and boiling points than other substances. Hence, at room temperature ($\text{25}°\text{C}$) substance A is available in gas form and the particles are disorderly arranged at $\text{25}°\text{C}$ .