The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

Greater than the percent of oxygen saturation of hemoglobin when the temperature is at a value higher than 38 degrees centigrade.

Explanation:

The percent of oxygen saturation of hemoglobin is a measure of how much oxygen is carried by the blood round the body.

If temperature is increased, the oxygen saturation decreases. This is  because the bond between iron in the Haemoglobin and oxygen gets denatured.

This weakening of the bond in the blood,  is the reason for a lower oxygen saturation in the blood at higher temperatures than the normal body temperature.

the answer is c.) there is a warm front in region a and a stationary front in region b.