Candidatul încrezător candidează și demonstrează calificarea.

Because -ul is the Romanian definite article for a masculine singular noun in this form.

• candidat = candidate
• candidatul = the candidate

Unlike English, Romanian usually puts the at the end of the noun as a suffix.

In Romanian, descriptive adjectives are usually placed after the noun in neutral, everyday word order.

So:

• candidatul încrezător = the confident candidate

This is the most normal order. Romanian can also put an adjective before the noun for emphasis or style, but that is less neutral.

Yes. Romanian adjectives agree with the noun in gender and number.

Here, candidatul is masculine singular, so the adjective is also masculine singular:

• încrezător = masculine singular

Some other forms are:

• încrezătoare = feminine singular
• încrezători = masculine plural
• încrezătoare = feminine plural

For example:

• candidata încrezătoare = the confident female candidate

Both are 3rd person singular, present tense.

That means they match a subject like:

• el = he
• ea = she
• or a singular noun like candidatul

So:

• candidează = he/she runs / is running / applies depending on context
• demonstrează = he/she demonstrates / is demonstrating

In this sentence, both verbs refer to the candidate.

Because both verbs belong to a common Romanian pattern, where some -a infinitives form the present tense with -ez / -ează.

Here the infinitives are:

• a candida = to run / to apply
• a demonstra = to demonstrate

Their present-tense forms include:

• candidez, candidezi, candidează
• demonstrez, demonstrezi, demonstrează

So -ează here marks the 3rd person singular present form.

Romanian often does not need subject pronouns when the subject is already clear.

Here, the subject noun candidatul încrezător is stated explicitly, so adding el would be unnecessary.

Even without the noun, candidează by itself could mean he/she is running, depending on context.

Calificarea is the definite singular form:

• calificare = qualification (dictionary/basic form)
• o calificare = a qualification
• calificarea = the qualification

So the sentence is referring to a specific qualification, not just any qualification in general.

As with candidatul, the definite article is added to the end of the noun.

Yes. They come from the same word family.

• candidat = candidate
• a candida = to run / to apply as a candidate

So the sentence uses a noun and a verb built from the same root, something like:

• the candidate candidates

That sounds odd in English, but it is perfectly normal in Romanian because a candida is the standard verb.

Also, this is related to English candidate, not to English candid meaning frank.

Și means and.

It simply links the two verbs:

• candidează și demonstrează = runs/applies and demonstrates

So the same subject, candidatul încrezător, is doing both actions.

The main special letters here are:

• ă — a short neutral vowel, similar to the a in sofa
• î — a sound English does not really have; it is a close central vowel
• ș — like English sh

A few helpful approximations:

• încrezător ≈ in-kreh-zuh-TOR
  
  • the first sound î is not exactly English in, but that is a rough guide
  • ă in the last part is like a soft uh
• candidează ≈ kan-dee-deh-AH-zuh
• și ≈ sh (very short)

These are only approximations, but they are useful starting points.

Yes, Romanian word order is fairly flexible, but this sentence uses the normal, neutral order:

• Subject + verb + verb + object

So:

• Candidatul încrezător candidează și demonstrează calificarea.

Changing the order is possible, but it usually changes the focus or emphasis rather than the basic meaning. For a learner, the version in the sentence is the safest and most natural pattern to copy.