True or false-- masaccio is responsible for ushering in a new approach to painting that was naturalistic. this approach was less about details and decoration and more focused on simplicity and unity. it was concerned more with illusion of three-dimensionality.

True

Explanation:

Masaccio, in his art style, avoids everything that is ornamental or overly animated.  His paintings have a great handling of perspective, the use of light, the use of color, the introduction of nature into the scene, everything indicates that he manages to give presence to naturalism. He was also very interested in the pre-three-dimensional relief image.