No word is always spelled correctly. But the word "correctly" is correctly spelled as correctly. (see related question)
Yes, you have spelled prosperous correctly.
That is a word, so it is spelled correctly if that is the word you are going for.
no it is spelled again
All of the words in the question are spelled correctly. The 11-letter word that is most often spelled incorrectly is...incorrectly.
Correctly: How did Elise spell? She spelled correctly.
You have spelled it correctly.
No, it is incorrect.These are correctly spelled.followfollowedfollowing
Incorrectly is one word.
The word "chosen" is spelled correctly in this case, yes.
He spelled the word correctly before the interview board.