The correct answer is 'terrifying.' Key Points - In the given sentence, we need a word (adjective) close to the meaning of 'extreme fear' to fill in the blank. - Let us see the meanings of the given words: - Terrified (Verb): caused to feel extreme fear. - Horrified: filled with horror; extremely shocked. - Terrifying (Adjective): causing extreme fear. - Denouncing: publicly declaring to be wrong or evil. - From the meanings of the words, we can say that 'terrifying' is the most appropriate answer. - Therefore, the correct answer is 'terrifying.'