What is true about a non-polar molecule?

A non-polar molecule is characterized by having an even distribution of charge, meaning there is no significant charge difference across the molecule. This lack of polarity arises because non-polar molecules either do not contain polar bonds or contain polar bonds that are arranged symmetrically, allowing their dipole moments to cancel out.

In contrast to polar molecules, which have regions of partial positive and negative charges due to a difference in electronegativity between the atoms involved, non-polar molecules do not exhibit this phenomenon. Moreover, non-polar molecules typically do not readily dissolve in polar solvents, as like dissolves like; polar molecules interact well with other polar substances and non-polar molecules interact well with non-polar substances.

Thus, the statement that a non-polar molecule has no significant charge difference accurately reflects its nature and is the reason why the correct answer is chosen.