Answer: B. summer
Explanation:
Seasons occur due to tilt of the Earth. Earth's axis is tilted 23.5° from the vertical. As the Earth revolves around the Sun, sometimes the Northern hemisphere points towards the Sun and sometimes away.
When the northern hemisphere points towards the Sun, Summer occurs and in the Southern hemisphere, winter occurs. In Summers, the Sun is highest in the sky and the sun rays fall directly. The duration of day time is greatest in summers. In winters, the Sun is lowest in the sky and sun rays fall obliquely.