Final answer:
The strong and agile musculature of cats can be explained by their need for strength and agility as predators.
Step-by-step explanation:
The apparent paradox of cats spending a lot of time sleeping but having strong, agile musculature can be resolved by the fact that cats require strength and agility to be effective predators. Cats, as predators, need to be able to pounce, chase, and capture their prey, and having strong and agile muscles enables them to do so.
Additionally, cats also engage in stretching and yawning when they awaken, which helps to further exercise their muscles. Stretching helps to improve flexibility and range of motion while yawning helps to oxygenate the muscles and increase blood flow.
Therefore, the most relevant option that helps to resolve the paradox is option E: Cats require strength and agility to be effective predators.