Gradually change direction, while create a sense of motion. a. (1) curvilinear lines; (2) diagonal lines c. (1) diagonal lines; (2) freeform shapes b. (1) texture; (2) horizontal lines d. (1) curvilinear lines; (2) color

The line is the most basic element of visual composition.

Curvilinear lines gradually change direction, while diagonal lines create a sense of motion. Correct A

Curvilinear lines are also called organic lines, because they are informal, curved lines like those often found in nature. Diagonal lines are dramatic and create power and dynamics.