Valget er avgjørende.

Because valget is the definite singular form of the noun valg.

• et valg = a choice / an election
• valget = the choice / the election

For many neuter nouns in Norwegian, you add -et to make them definite.

Valg is a neuter noun, so its basic form is et valg.

Its common forms are:

• et valg = a choice / an election
• valget = the choice / the election
• valg = choices / elections
• valgene = the choices / the elections

This is why the sentence uses valget, not valgen.

Er is the present tense of å være, meaning to be.

So the structure is:

• Valget = the subject
• er = is
• avgjørende = the description of the subject

This is a very normal Norwegian sentence pattern: subject + er + adjective.

Many Norwegian adjectives do change form depending on gender and number, but avgjørende is one of the adjectives that usually stays the same.

Compare:

• en stor bil
• et stort hus

But:

• en avgjørende faktor
• et avgjørende valg
• avgjørende spørsmål
• Valget er avgjørende

So even though valg is neuter, you still say avgjørende, not a different ending.

In this sentence, it functions as an adjective.

Historically, it comes from the verb å avgjøre, which means to decide, to determine, or to settle. The form avgjørende is related to a present participle, but in everyday use it often works just like an ordinary adjective meaning:

• decisive
• crucial
• critical

So in Valget er avgjørende, you should think of it as an adjective describing valget.

Yes. Valg can mean either choice or election, and context tells you which one is meant.

For example:

• et vanskelig valg = a difficult choice
• valget i høst = the election this autumn

So if you see valget by itself, you often need the larger context to know which meaning is intended.

No, this is the basic Norwegian word order for a simple statement:

• Valget = subject
• er = verb
• avgjørende = subject complement

So it follows the normal pattern subject + verb + complement.

A useful thing to remember, though, is that Norwegian is a verb-second language. If another element comes first, the verb still stays in second position:

• Valget er avgjørende
• I denne saken er valget avgjørende

This sentence is Bokmål.

A typical Nynorsk version would be:

• Valet er avgjerande

So if you are learning Bokmål, Valget er avgjørende is the expected form.