The correct answer is C. "It gets the water it needs from the seeds it eats."
Step-by-step explanation:
The paragraph explains the desert, which is the habitat of kangaroo rats, is a tough habit and many species could not survive in this due to the scarcity of water. However, in the last 2 sentences of the paragraph, the author explains this species of rodent has adapted to this habitat because it requires little water and they can get this through seeds. This implies Kangaroo rat survive because they do not depend on rainfall but get water through seeds. According to this, the detail that helps you know how kangaroo rat survives is "It gets the water it needs from the seeds it eats."