Questions & Answers about Jaka ona jest? — Młoda i ładna.
Why does the Polish sentence use Jaka instead of words for "what" and "like"?
In English, we say "what is she like?", but translating that word-for-word into Polish doesn't work. Instead, Polish uses the question word jaki, which means "what kind of" or "what is someone like". Because we are asking about a female (ona), we use the feminine form jaka.
Why do the words młoda and ładna both end in "-a"?
In Polish, adjectives (describing words) must match the gender of the person or thing they describe. Since we are talking about a woman (ona), the adjectives take the feminine ending -a, becoming młoda (young) and ładna (pretty).
If I wanted to ask this exact question about a man, how would the sentence change?
You would need to change the question word, the pronoun, and the adjectives to their masculine forms. The question becomes Jaki on jest? (What is he like?), and the answer changes to Młody i ładny.
Could I drop the word ona and just ask Jaka jest?
Yes, Polish often drops pronouns like "he" or "she" because the verb usually tells you who is doing the action. However, because the verb jest can mean "he is", "she is", or "it is", keeping ona in the sentence makes it perfectly clear that you are asking about a female if it wasn't already obvious from the conversation.