Based on your description of "At the Water’s Edge" by Paul Cézanne, the painting is often recognized for its innovative use of color, brushstrokes, and composition. Cézanne is known for his unique application of color to create depth and atmosphere.
Given the choices, "creative use of brushstroke for textures" would likely be the most fitting response. Cézanne was renowned for his distinctive brushwork, which contributed to the textures and overall visual impact of his landscapes.
Therefore, the answer is: creative use of brushstroke for textures.