When the ratio PV to NRT is plotted against pressure for a real gas the line deviates from the horizontal. what factor dominates for portions of the curve below the line for an ideal gas? a) intermolecular attractions b) effusion of molecules
c)molecular volume

it would be B

Explanation:

Thus far, the ideal gas law, PV = nRT, has been applied to a variety of different types of problems, ranging from reaction stoichiometry and empirical and molecular formula problems to determining the density and molar mass of a gas. As mentioned in the previous modules of this chapter, however, the behavior of a gas is often non-ideal, meaning that the observed relationships between its pressure, volume, and temperature are not accurately described by the gas laws. In this section, the reasons for these deviations from ideal gas behavior are considered.

hope this helps

0.88m hope i am correct : )