Medlemmet stiller spørsmål.

Because medlem is a neuter noun: et medlem = a member.

In Norwegian, the definite article is usually attached to the end of the noun, so:

• et medlem = a member
• medlemmet = the member

Even though it refers to a person, the noun is still grammatically neuter.

Stiller is the present tense of stille.

So:

• å stille = to ask / to pose / to put forward (depending on context)
• stiller = asks / poses

In this sentence, stille spørsmål is a very common expression meaning to ask questions or to ask a question.

Both can be used, but they are not always identical in tone.

• spør is the ordinary verb ask
• stille spørsmål is a common expression meaning ask questions / pose questions

Stille spørsmål can sound a little more formal or deliberate, especially in written Norwegian.

For example:

• Medlemmet spør. = The member asks.
• Medlemmet stiller spørsmål. = The member asks questions / poses questions.

So this sentence uses a very natural Norwegian collocation.

Because Norwegian often uses a bare noun in set expressions like stille spørsmål.

Here, spørsmål appears without et, and that usually gives a more general meaning such as:

• asks questions
• raises questions
• does some questioning

If you want to clearly mean one question, you would normally say:

• Medlemmet stiller et spørsmål.

So the version without an article sounds more general or plural-like.

This is a good question because spørsmål is one of those Norwegian nouns whose indefinite singular and indefinite plural look the same.

Forms of the noun:

• et spørsmål = a question
• spørsmålet = the question
• spørsmål = questions
• spørsmålene = the questions

In this sentence, since there is no et, learners will usually understand spørsmål as questions or questioning in general.

The sentence has the normal main-clause order:

• Medlemmet = subject
• stiller = verb
• spørsmål = object

So it follows subject + verb + object.

This also fits the Norwegian V2 rule: in a main clause, the finite verb normally comes in the second position.

For example:

• Medlemmet stiller spørsmål.
• I møtet stiller medlemmet spørsmål.

In the second example, I møtet comes first, so the verb stiller still stays in second position.

Yes. That would mean A member asks questions.

The difference is definiteness:

• Medlemmet = the member (a specific member)
• Et medlem = a member (not specifically identified)

So both are grammatical, but they mean different things.

Yes, in standard Bokmål the definite singular is medlemmet, because the noun is neuter.

Compare:

• et medlem → medlemmet
• et spørsmål → spørsmålet

If a noun were a common-gender noun, the definite ending would usually be -en instead.

Yes, it is completely natural.

Medlemmet stiller spørsmål sounds like normal written or spoken Norwegian, especially in contexts such as:

• a meeting
• a class
• a hearing
• a discussion

It may sound slightly formal because of stiller spørsmål, but it is still very ordinary and idiomatic Norwegian.