Цель: Понять
To transform the word "wrong" into a word that fits both lexically and grammatically in the sentence, we need to add a prefix to change the meaning.
The prefix that best suits this context is "in-". So, when the prefix "in-" is added to "wrong", it becomes "incorrect".
Therefore, the sentence should read:
"The answer was - incorrect. It was completely"
Ответ: incorrect