Why do we sleep? pythons, bats and giant armadillos are aming...

Why do we sleep?
pythons, bats and giant armadillos are aming the longest sleepers at over 18 hours a day. human babies need 16 hours , and most of us probably feel we need around eight hourssleep to functions well, professor jerry seigel from the univarsity of california, los angeles, conducted a study of the sleep times of a broad range osanimals and found that they vary widely. some, like migrating birds, can survive long periods without sleeping at all. he believes that shows sleep evolved to conserve energy.
jerry seigel: ‘ it’s animals that are needlessly active that will not survive, but animals that are most eficiente and use their waking time to do vital functions, andare otherwise asleep that will survive.’ sleep helps make best use of limited resources. in humans, when we’re awake, our brain accountsfor 20% of the energy we use when justsitting around. sleeping also makes us less likely to get injured and less likely to be detected by predators.

among the benefits of sllep we may not include:
a- no energy waste
b- lower probability of getting hurt
c- better use of resources
d- conservation of energy
e- lower probability of being caught by a predator.

qual a alternativa correta?