Correct Answer - D
Benzene is non-polar in nature. As we know that non-polar disperseds more to non-polar substnaces. Therefore, meta-methyl nonylbenzene being nonpolar from both sides will disperse more to benzene. All other substances (a,b and d) have either one side polar or both sides polar.
`-=H_(19)C_(9)-C_(6)H_(4)-CH_(3)`