Zdravstveno stanje je u upitniku za davaoca.

to be

Breakdown of Zdravstveno stanje je u upitniku za davaoca.

• u: in
• upitnik za davaoca: a donor questionnaire
• zdravstveno stanje: health status

Questions & Answers about Zdravstveno stanje je u upitniku za davaoca.

What case is zdravstveno stanje in?

It is in the nominative singular, because it is the subject of the sentence.

• stanje = state / condition
• zdravstveno stanje = health condition / health status

Since the subject is singular, the verb is also singular: je.

Why does zdravstveno end in -o?

Because it agrees with stanje, which is a neuter singular noun.

The adjective is zdravstveni in its dictionary form, and it changes to match the noun:

• masculine: zdravstveni
• feminine: zdravstvena
• neuter: zdravstveno

So:

• zdravstveno stanje = neuter adjective + neuter noun

This kind of adjective-noun agreement is very important in Serbian.

Why is it u upitniku and not u upitnik?

Because u can take different cases depending on the meaning.

Here it means in in the sense of location, so it requires the locative case:

• nominative: upitnik
• locative: u upitniku

Compare:

• u upitniku = in the questionnaire → location
• u upitnik = into the questionnaire → movement toward the inside, so accusative

In this sentence, nothing is moving; it is simply located there.