Having warm weather all year with a distinct winter and summer season where winter is a long, dry, and slightly cooler season with only 4 inches of rain on average, and summer is a very hot, humid, and wet season with 15 to 25 inches of rain, with monsoon rains beginning in may describes the biome(s).
a. rainforest
b. savanna and grassland
c. deciduous forest
d. chaparral

The correct answer is B. Having warm weather all year with a distinct winter and summer season where winter is a long, dry, and slightly cooler season with only 4 inches of rain on average, and summer is a very hot, humid, and wet season with 15 to 25 inches of rain, with monsoon rains beginning in May describes the savanna and grassland biomes.

Explanation:

Savanna and grassland climates are tropical climates with dry winters and rainy summers. It is a type of tropical climate for which there is a pronounced seasonality - dry winters and rainy summers.

The tropical climate with humid summers and dry winters has 2 pronounced seasons. According to the Köppen climate classification, a month in a tropical climate is considered rainy if the rainfall in it is not less than 60 mm. The remaining months are considered dry. This type of climate is formed if the number of rainy months is from three to nine during the calendar year. For this climate, as well as for other tropical climates, average monthly air temperatures exceed 17˚ throughout the year.