Which tool can Andrew use to change the color of the sky in his beach sunset photo?

The Sponge Tool is designed to adjust the saturation of colors in an image, allowing for nuanced control over areas like the sky in a beach sunset photo. By using the Sponge Tool set to " saturate," Andrew can enhance the existing color of the sky, making it appear richer and more vibrant, which is essential for achieving the desired sunset effect.

Other tools, like the Brush Tool, could allow for painting directly on the image but may not achieve the same level of color adjustment across a wider area or blend as seamlessly. The Gradient Tool is more suited to creating smooth transitions between colors rather than modifying an existing area’s color. The Magic Wand, which selects areas of similar color, would not inherently change the color; it would only allow Andrew to select the sky for adjustments, but it would not provide the color modification capability that the Sponge Tool offers.