Concept:The rise of a liquid in a narrow glass tube is caused by capillary action.Explanation:When an open glass tube with a narrow bore is placed in a liquid, the adhesive force between the liquid and the glass pulls the liquid upward.At the same time, cohesive forces and surface tension act at the curved meniscus.The combined result is that the liquid rises inside the tube until the upward force balances the weight of the liquid column.This specific phenomenon is known as capillarity or capillary action.Answer:C. capillarity