I believe that it is Olmec.
Amount of sunlight, distance from equator, and height above sea level
The SunBelt is a region defined by warm climate of the United States. Is not a political example although this region coincide with a very fast growing economy and population for the last decades.
Corect answer is C - a formal example
La llegada de la corriente del Niño es considerada beneficiosa porque anuncia la temporada anual de lluvias, necesaria para la agricultura y el ciclo biológico del bosque seco ecuatorial.
In general, the highest relative humidity is observed NEAR SUNRISE and the lowest relative humidity is observed during MID-AFTERNOON.
Relative humidity is inversely proportional to temperature. The colder the climate, the higher the relative humidity. The hotter the temperatures outside, the lower the relative humidity.
Relative humidity increases as the air temperature falls at night and peaks at dawn.
Temperature peaks during mid-afternoon, thus relative humidity is at its lowest.