The pliable and nimble antelope sped across the open grassland.

In this sentence, why would lithe be a better synonym for "flexible" than pliable is?
1;Lithe can also refer to graceful movement.
2;Lithe implies greater flexibility than pliable does.
3;Lithe can refer to mental flexibility as well as physical agility.

Both options 1 and 2 are correct reasons why lithe would be a better synonym for "flexible" than pliable. However, option 2 specifically highlights that lithe implies greater flexibility than pliable does, which makes it the more accurate choice. Option 3 is not accurate because there is no mention of mental flexibility in the sentence.