Brenda made the heliocentric model shown below to represent the sun, universe, Mercury, and solar system.

The picture shows a rectangle. Within the rectangle there is an oval. At the center of the oval there is a rhombus. On the right of the rhombus, within the oval, there is a symbol showing a small circle within a slightly larger circle, the two circles being concentric. On the right of the picture the key shows A equals rectangle, B equals oval, C equals rhombus, and D equals concentric circles.

What does the symbol for D in Brenda's diagram most likely represent? (2 points)

sun

universe

Mercury

solar system