On average, eastern regions of Oklahoma receive inches of rain per year, while the Panhandle region receives about inches. A. 9 . . . 73 B. 73 . . . 9 C. 15 . . . 51 D. 51 . . . 15

The correct option is;

D. 51...15

Explanation:

The pattern of rainfall in Oklahoma shows a variation of decreasing rainfall  from East to West, with an average annual rainfall of about 17 inches in the western panhandle to 56 inches in the southeastern Oklahoma. Within the summer months of July and August, there is a lessened characteristic distribution. The maximum recorded precipitation was 84.47 inches and the minimum recorded precipitation was 6.53 inches.

The number of days of precipitation also increases from 45 days per year in the Eastern region to 115 days per year in the West.

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