On which principle does the solvent move on chromatography paper?

Match List-$I$ with List-$II$:

List-$I$ (Mixture)	List-$II$ (Separation Technique)
$A$. $CHCl_3 + C_6H_5NH_2$	$I$. Steam distillation
$B$. $C_6H_{14} + C_5H_{12}$	$II$. Differential extraction
$C$. $C_6H_5NH_2 + H_2O$	$III$. Distillation
$D$. Organic compound in $H_2O$	$IV$. Fractional distillation

Which of the following compounds is used as an adsorbent in column chromatography?

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$:
Assertion $(A):$ $A$ simple distillation can be used to separate a mixture of propanol and propanone.
Reason $(R):$ Two liquids with a difference of more than $20^{\circ}C$ in their boiling points can be separated by simple distillation.
In the light of the above statements,choose the most appropriate answer from the options given below:

Chromatography is a valuable method for the separation,isolation,purification,and identification of the constituents of a mixture. It is based on the general principle of:

Paper chromatography is an example of