再问OG163，关于特指和泛指

og163的解释都看过，没有我要的回答，故另起一个。

163. Found throughout Central and South America, sloths hang from trees by long rubbery limbs and sleep fifteen hours a day, moving infrequently enough that two species of algae grow on its coat and between its toes.

1. sloths hang from trees by long rubbery limbs and sleep fifteen hours a day, moving infrequently enough
   
   
   
   
2. sloths hang from trees by long rubbery limbs, they sleep fifteen hours a day, and with such infrequent movements
   
   
   
   
3. sloths use their long rubbery limbs to hang from trees, sleep fifteen hours a day, and move so infrequently
   
   
   
   
4. the sloth hangs from trees by its long rubbery limbs, sleeping fifteen hours a day and moving so infrequently
   
   
   
   
5. the sloth hangs from trees by its long rubbery limbs, sleeps fifteen hours a day, and it moves infrequently enough
   
   

D, the best choice, correctly subordinates sleeping and moving to hangs while using the idiomatically correct phrasing so (infrequently) that.... The pronoun its shows clearly that the limbs belong to the sloth, not the trees. Choice A illogically coordinates hang and sleep and, like E, uses the unidiomatic expression infrequently enough that. B creates an awkward and nonparallel series: sloths hang ..., they sleep ..., and with.... C creates a confusing and absurd image with use their... limbs to hang ..., sleep ..., and move .... A, B, and C all mistakenly use the plural sloths, which does not agree , with its coat and... its toes. E wrongly coordinates hangs and sleeps and violates parallelism by inserting it before moves to create a new independent clause.

我的问题在于the sloth和sloths的区别，本题用a sloth是不是更好呢？

很显然这道题是泛指嘛，不然怎莫会Found throughout Central and South America呢？但如果是泛指的话，用the sloth合适吗？还请NN回答！谢谢！