The sentence that best supports the idea that spider monkeys don't come to the ground often is:"Spider monkeys are arboreal creatures, spending the majority of their time in the treetops and descending to the ground only occasionally to search for food or water."
Spider monkeys are arboreal creatures": This phrase establishes that spider monkeys are adapted to living in trees. "Arboreal" refers to an animal's tendency to live in trees, indicating that spider monkeys are well-suited for an arboreal lifestyle.
"Spending the majority of their time in the treetops": This part of the sentence reinforces the idea that spider monkeys primarily inhabit the upper levels of the forest, indicating a strong preference for an arboreal habitat.
"Descending to the ground only occasionally": This phrase contrasts with their arboreal lifestyle, suggesting that coming down to the ground is not a frequent or common behavior for spider monkeys.