"This man, this woman, this child"
Translation:Ten mężczyzna, ta kobieta, to dziecko
At some point we decided to accept those for simple 'man' and 'woman' as well. Added now.
One thing: you wrote that you are working on your written Polish. So it is worth to say, that you shouldn't capitalize "Pan" and "Pani" right now.
First of all, you use them here simply as nouns. So they shouldn't be capitalized at all.
And even if you translated a sentence using Formal You, on Duolingo you just have sentences without any context. They're like quotes. Or fragments of dialogue. You only capitalize "Pan" and "Pani" (and preferably all other instances of "you" and "your") if you're writing a message and addressing someone directly.