question:  What isn't a reason that Ri turned on Mia?
context: Of course using live bait is the best way to lure dangerous alien animals ... unless it turns out that you are the bait! Extrone asked, "Is there a pass?" Right up ahead of us. "We'll pitch camp right here, then," Extrone said. He crossed to Mia, who, along with him, had been pressed into Extrone's party as guides. Once more, Ri addressed the bearers, "Be quick, now!" And to Mia, "God almighty, he was getting mad." "At least, then, I wouldn't be one of his guides. "What hurts most, he pays us for it. "Yes, sir," Ri said, and instantly the two of them readjusted their shoulder straps and started off. And I don't think there's another cargo rocket on this planet outside of the one we leased from the Club. "Whoever they were, they couldn't have been hunters. "Everybody and his brother had heard the rumor that farn beasts were somewhere around here. Mia shook perspiration out of his eyes. "After Extrone said he'd hunt farn beasts, even if it meant going to the alien system? I didn't tell Extrone, if that's what you're thinking," Mia said. Too many people already know about the farn beasts. "You'll destroy this one, too," Extrone said. Extrone said, "To begin with, they probably don't even know I'm here. "That's why we'd like you to return to an inner planet, sir." Extrone plucked at his right ear lobe, half closing his eyes. "You'll lose a fleet before you'll dare let anything happen to me, gentlemen. "Get off," Extrone said quietly to the four officers. The takeoff blast of the rocket illuminated the area, casting weird shadows on the gently swaying grasses; there was a hot breath of dry air and the rocket dwindled toward the stars. Extrone said, turning, startled.
output:  he thought Mia had a better chance to survive
options:  he thought Mia had a better chance to survive  Mia's ideas scared him  he thought his honesty would save him  he didn't want to be bait