A resposta está errada.

A is the feminine singular definite article, meaning the.

It is used here because resposta is a feminine singular noun:

• a resposta = the answer

In Portuguese, nouns usually need an article more often than in English, so A resposta sounds very natural.

Resposta is a noun meaning answer or response, and it is inherently feminine in Portuguese. Nouns have grammatical gender, so you simply learn them with their article:

• a resposta = the answer
• not o resposta

The ending -a often suggests a feminine noun, and that is the case here.

Portuguese has two main verbs for to be: ser and estar.

Here, está is used because the sentence is describing a condition or state:

• A resposta está errada. = The answer is wrong.

This is the most natural choice when talking about something being correct or incorrect in a given situation.

Compare:

• está errada = is wrong
• está certa = is right

Using é errada is much less natural here and would sound more like saying the answer is inherently wrong by nature, which is not usually the idea.

Está is the third-person singular form of estar in the present tense.

Conjugation of estar in the present:

• eu estou
• você / ele / ela está
• nós estamos
• vocês / eles / elas estão

Since a resposta is singular, the verb is also singular:

• A resposta está...

Because adjectives usually agree in gender and number with the noun they describe.

Here:

• resposta is feminine singular
• so the adjective must also be feminine singular

That gives:

• errada = wrong

Compare:

• o exercício está errado = the exercise is wrong
• a resposta está errada = the answer is wrong
• as respostas estão erradas = the answers are wrong

Errada means wrong, incorrect, or mistaken, depending on context.

In this sentence, it most naturally means:

• wrong
• incorrect

It comes from the adjective errado / errada.

Yes. A resposta está incorreta is completely correct and natural.

Both mean basically the same thing:

• A resposta está errada = The answer is wrong.
• A resposta está incorreta = The answer is incorrect.

A small nuance:

• errada is very common and everyday
• incorreta can sound a bit more formal or precise

The accent in está shows the stressed syllable and is part of the correct spelling.

• está = is
• esta = this

So the accent is important because it distinguishes different words:

• esta resposta = this answer
• a resposta está errada = the answer is wrong

Yes, you can say Está errada a resposta, but it is less neutral.

The normal, straightforward order is:

• A resposta está errada.

If you say:

• Está errada a resposta.

it can sound more emphatic, literary, or like you are highlighting the answer specifically.

For most learners, A resposta está errada is the safest and most natural pattern.

In standard Portuguese, that sounds unnatural in this context.

Usually you would say:

• A resposta está errada.

Portuguese generally uses articles more often than English. Leaving out the article here would sound incomplete unless it were part of a very special context, like notes, headlines, or very informal shorthand.

Yes. Resposta can mean both answer and response depending on context.

Examples:

• A resposta da prova está errada. = The answer on the test is wrong.
• Não recebi resposta. = I didn’t receive a response.

In your sentence, answer is the most likely meaning.

A natural Brazilian Portuguese pronunciation is approximately:

• a hehs-POHS-ta es-TA eh-HA-da

A few pronunciation notes:

• resposta has stress on pos
• está has stress on tá
• in many Brazilian accents, rr in errada sounds like an English h or a throaty sound
• the final a is clearly pronounced

A rough syllable breakdown:

• A / a
• resposta / res-POS-ta
• está / es-TÁ
• errada / e-RRA-da

To make it plural, both the noun, verb, article, and adjective change:

• As respostas estão erradas. = The answers are wrong.

Breakdown:

• a → as
• resposta → respostas
• está → estão
• errada → erradas

This is a good example of agreement working across the whole sentence.