Question

what liquid property is defined as the spontaneous flow of a liquid into a narrow tube or porous material?
vapor pressure
capillary action
volality
surface tension

Explanation:

The question asks for the liquid property describing spontaneous flow into narrow tubes/porous materials. Vapor pressure relates to evaporation; volatility is evaporation rate; surface tension is liquid surface cohesion. Capillary action matches the definition.

Answer:

capillary action