Questions & Answers about Hun stoler på vitenskapen.
Because the full Norwegian expression is å stole på, which means to trust or to rely on someone or something.
So in this sentence:
- stoler = present tense of å stole
- på = a required preposition in this expression
You should learn å stole på as a unit, much like an English phrasal verb.
Examples:
- Jeg stoler på deg. = I trust you.
- Vi stoler på legen. = We trust the doctor.
It is simply the preposition that goes with å stole when it means to trust.
In English, we say trust someone/something with no preposition, but Norwegian uses stole på. This is an idiomatic difference, so it is best to memorize it as a fixed pattern.
Not every Norwegian preposition matches English directly.