Final answer:
During the Spring Equinox in the U.S., the Earth is closest to the sun. The tilt of Earth's axis causes the seasons, but it doesn't affect the distance between the Earth and the sun.
Step-by-step explanation:
The correct answer is b) Closest to the sun.
During the Spring Equinox, which occurs around March 21st or 22nd in the U.S., the Earth is actually closest to the sun. This might sound counterintuitive since it is typically associated with spring, but it's because of the tilt of Earth's axis and its elliptical orbit around the sun.
The tilt of Earth's axis causes the seasons, but it doesn't affect the distance between the Earth and the sun. The distance between the Earth and the sun varies throughout the year due to the elliptical shape of the Earth's orbit. The Earth is closest to the sun around January 3-5, during the winter in the northern hemisphere.