Answer:
A. 30° north and 30° south.
Step-by-step explanation:
Tropical climates usually found near the equator region between 22.5 degrees North and 22.5 degrees South. This area is prone to more solar radiation compared to higher latitudes. The direct sunlight makes this region warm. this region is comprised of moisture and warmth which results in plenty of rain. As per the question, a tropical climate exists between the geographical lines of 30 degrees north and south of the equator respectively, where tropical air found its way.