The Steppe region is represented by the given climate data and here`s why:

1. Mediterranean region: This area is characterized by hot, dry summers and mild, wet winters. However, the data shows a fairly consistent temperature year-round, without the pronounced seasonality typical of the Mediterranean climate. In addition, while rain is minimal in the mid-summer months (equivalent to Mediterranean summer dryness), the rainfall is not heavily weighted towards the winter months as expected in the Mediterranean region.

2. Monsoon region: The monsoon climate is characterized by distinct wet and dry seasons. Although the data does indicate a drier period in summer (low rainfall in July and August), it does not show the heavy, concentrated rainfall typically associated with a monsoon season.

3. Steppe region: The steppe climate is characterized by warm summers, cold winters, and little rain. The given data aligns well with this, as the temperatures steadily increase before peaking in the summer months and there`s overall a low level of rainfall throughout the year.

4. N.W. European region: This is characterized by mild temperatures all year round and consistent rainfall. However, the pattern of temperature and rainfall in the data does not match this pattern.

Therefore, the correct answer is