What's correct?
1) The skull protects on the brain
or
2) the skull protects the brain
What's correct?
1) The skull protects on the brain
or
2) the skull protects the brain
The answer is: it depends on the context, because according to the context it's decided if it's transitive or intransitive verbs.
In this context is a transitive verb and therefore the answer is "protects" (without prepositional)
The skull protects the brain