Die aard van die probleem is duidelik.

Because Afrikaans uses die as the definite article for all genders and both numbers in most ordinary cases.

So in this sentence:

• die aard = the nature
• die probleem = the problem

English also uses the twice in the nature of the problem, so this is actually quite parallel.

Aard means nature, character, or essential quality.

In this sentence, die aard van die probleem means the nature of the problem—in other words, what kind of problem it is, or what its basic character is.

You may also see aard in other expressions, such as:

• van nature/aard = by nature
• goedaardig = good-natured

So aard is a useful word connected with the idea of someone’s or something’s basic character.

Van usually means of or from, depending on context.

Here it means of:

• die aard van die probleem = the nature of the problem

Afrikaans often uses van where English uses of to link two nouns. This is one of the most common ways Afrikaans expresses relationships like possession, connection, or description.

Compare:

• die naam van die boek = the name of the book
• die einde van die dag = the end of the day

Yes. Die probleem se aard is also possible and means basically the same thing: the problem’s nature or the nature of the problem.

A quick comparison:

• die aard van die probleem = a very standard, neutral way to say it
• die probleem se aard = also correct, often a bit more direct or colloquial

In more formal or abstract writing, van-phrases are often very common, so die aard van die probleem sounds perfectly natural.

This is the normal Afrikaans word order for a simple main clause:

Subject + verb + complement

So here:

• Die aard van die probleem = subject
• is = verb
• duidelik = complement/adjective

That is very similar to English:

• The nature of the problem
  • is
    • clear

So the word order is not unusual at all.

Duidelik is being used predicatively, meaning it comes after the verb is and describes the subject.

In Afrikaans, adjectives used this way usually do not change form:

• Die antwoord is duidelik = The answer is clear
• Die antwoorde is duidelik = The answers are clear

So duidelik stays duidelik.

This is different from some adjectives used before a noun, where forms can sometimes differ:

• ’n duidelike antwoord = a clear answer

So:

• is duidelik = predicative, no extra ending
• ’n duidelike probleem = attributive, often with -e

Afrikaans uses is as the present tense form of to be for all persons and numbers in ordinary present-tense statements.

So you get:

• Ek is = I am
• Jy is = you are
• Hy is = he is
• Ons is = we are
• Hulle is = they are

That makes Afrikaans simpler than English in this area. In your sentence, is is the correct form no matter that the subject is a long noun phrase.

More or less, yes. Probleem is a very close cognate of English problem.

The main difference is pronunciation and spelling details:

• English: problem
• Afrikaans: probleem

Afrikaans often has words that look familiar to English speakers, especially in more formal or academic vocabulary, but the pronunciation may differ.

A rough English-friendly guide would be:

duh AHRT fun duh pruh-BLEEM is DUY-duh-lik

A few notes:

• die in Afrikaans is usually pronounced more like duh, not like English die
• aard has a long vowel sound, roughly ahrt
• probleem has stress on the second syllable: pro-BLEEM
• duidelik begins with a sound a bit like duy or doi, depending on accent

Pronunciation varies by speaker and region, but that rough guide will get you close.

It sounds neutral to slightly formal.

The phrase die aard van die probleem is the kind of wording you often see in:

• explanation
• analysis
• school or academic writing
• formal discussion

In everyday speech, people might also use simpler wording depending on context, but this sentence is completely natural and standard Afrikaans.

Yes, depending on context, duidelik can overlap with clear, plain, or sometimes obvious.

In this sentence, it most naturally means clear:

• Die aard van die probleem is duidelik = The nature of the problem is clear

But in the right context, duidelik can also suggest that something is evident or easy to understand.

So it is a flexible word, and context determines the best English translation.