What should be used instead of adding more water when creating thick acrylic texture?

Correct answer: Impasto medium

The governing concept is maintaining paint body while building relief. An impasto medium is designed to thicken acrylic and help it hold raised marks, peaks, and textured strokes without excessively weakening the binder. Therefore option B is correct. Adding a large amount of water makes the paint runnier and can reduce film strength; ink, glue water, and kerosene are not appropriate standard materials for constructing stable acrylic texture.