Solar Radiation, Heat Balance and Temperature — Geography STD 11 Humanities — Question

Multiple choice question.
The main reason that the earth experiences highest temperatures in the subtropics in the northern hemisphere rather than at the equator is:

1. Subtropical areas tend to have less cloud cover than equatorial areas.
2. Subtropical areas have longer day hours in the summer than the equatorial.
3. Subtropical areas have an enhanced “green house effect” compared to equatorial areas.
4. Subtropical areas are nearer to the oceanic areas than the equatorial locations.