The correct option is D
The Red River expedition or Sparks expedition, or officially as an expedition to explore the Red River in 1806, was one of the first civil scientific expeditions sent to explore the southwestern United States. It was commissioned to: find the headwaters of the Red River as a possible commercial route to Santa Fe, then under Spanish control; get in touch with the native peoples to establish business relationships; collect data on flora, fauna and topography, and the map of the country and the river; and evaluate the land for future settlements. The Spaniards intercepted the expedition when it had traveled 990 km upriver, in what is now northeast Texas, and had to turn around before the game achieved all its objectives.