The table shows the times of sunrise and sunset and the total amount of insolation received on Earth’s surface at four locations, A, B, C, and D, at the beginning of each season. The locations have the same longitude, but are at different latitudes. Data were collected on clear, sunny days. Why are the times of sunrise and sunset for March 21 and September 23 nearly the same at each location?
1. The Sun’s altitude at noon is the same everywhere on Earth on these days.
2. Earth is at its closest and farthest points from the Sun on these days.
3. The Sun’s insolation reaches its maximum intensity on these days.
4. The Sun is directly above the Equator on these days.