…[we escaped] To this island we gave the name of the Island of Ill-Fate [perhaps Galveston Island]. The people on it are tall and well formed; they have no other weapons than bows and arrows…The women do the hard work. People stay on this island from October till the end of February, feeding on the roots and fish. Among these I improved my condition by becoming a trader, doing the best in it I could, and they gave me food and treated me well…So, trading along with my wares I penetrated inland as far as I cared to go and along the coast … My stock consisted mainly of pieces of seashells and cockles…These things I carried inland, and brought back hides and red ochre with which they rub and dye their faces and hair; flint for arrow points, glue and hard canes where-with to make them, and tassels made of the hair of deer, which they dye red. This trade suited me well because it gave me liberty to go wherever I pleased; I was not bound to do anything and no longer a slave. Wherever I went they treated me well, and gave me to eat for the sake of my wares. Nearly six years I spent thus in the country, alone among them and naked, as they all were themselves. —Excerpt from the Journal of Alvar Nunez Cabeza de Vaca,
written in 1542 about events beginning in 1527

Based on the primary source Excerpt from the Journal of Cabeza de Vaca, which of the following summarizes ways physical and human factors affected Cabeza de Vaca's early exploration in Texas?
a. Cabeza de Vaca adapted to life on the Texas coast and interacted with Native Americans by trading natural resources.
b. Cabeza de Vaca found that Spanish-speaking Native Americans in Texas depended on weather and climate to farm.
c. After arriving safely on Galveston Island, Cabeza de Vaca found plentiful food, clothing, and shelter.
d. Weather and climate patterns in Texas during the 16th century were colder and Native Americans in the region were able to fight successfully against the Spanish conquerors.