 Which is the best characterization of why Stinson decided he did not want to bring his people to this planet?
He touched the pencil-line scar behind his ear where the cylinder was buried, marveling at the power stored there, power to fling him from earth to this fourth planet of the Centaurian system in an instant. A gray, funnel-shaped cloud of dust stood off to his left. Weather control made cyclones and other climatic phenomena on earth practically non-existent. He was here and Earth was somewhere up there. Again Stinson felt the urge to run, or to use the cylinder to project himself somewhere else, but he said, "No!" very firmly to himself. He was here to investigate, to determine if this planet was capable of supporting life. When it changed to a cube he drew a square, a circle for a sphere, and so on. He became so absorbed in doing this that he failed to notice how the wind devil drew closer and closer, but when he inhaled the first grains of sand, the realization of what was happening dawned with a flash of fear. These creatures were not only humanoid, but definitely human, although more slight of build than earth people. He pointed upward, described a large circle, then another smaller, and showed how Earth revolved around the sun. They had exhibited human emotions of anger, fear and, that most human of all characteristics, curiosity. But up to now the tube and the chain was the only evidence of an advanced technology, unless the ancient inscriptions in the stone wall of the pool, and the statues lining the wall were evidences.
 He is suspicious of the moodiness of the Sand God
 He is suspicious of the moodiness of the Sand God  He doesn't want to bear the weight of being treated like a God  He does not want to have to confront his feelings for Sybtl  He is not convinced that the Sand God will let humand and the web-footed people coexist