Hey friend! Let's figure this out! The answer is C. Summer solstice. The sun is at its northernmost when it passes the first solstice after the vernal equinox on June 21 or 22, which is in the summer time.
The summer solstice occurs when one of the Earth's poles has its maximum tilt towards the Sun. In the northern hemisphere, this means that the sun is at the northernmost point in the sky. This is also the longest period of daylight, while on the Arctic, there is continuous daylight. The summer solstice usually occurs between June 20 and June 22.
