✅ The correct answer is option C.
The latitude AA on the map represents the equator (0 degrees). The latitude AA on the map represents the equator. The imaginary line which divides the Earth into two halves is known as the Equator.
✅ The correct answer is option A.
The temperature in the photosphere is about 10,000 degrees F (5,500 degrees C). It is here that the sun’s radiation is detected as visible light. Sunspots on the photosphere are cooler and darker than the surrounding area.
✅ The correct answer is option B.
The Earth’s mean radius is determined as the average distance from the physical center to the surface, based on a large number of samples. The value, symbolized rearth, is equal to approximately 6,371,000 meters (6.371 x 106 m). This is roughly 6,371 kilometers (km) or 3,960 statute miles.