영어 문제 물어봅니다 She didn’t give a _____ answer, so no one understood

She didn’t give a _____ answer, so no one understood exactly what she meant.이 빈칸에 1.specific 2.vague 였는데 왜 답이 2번인가요? 1번이 왜 안 되나요? 중3입니다!

말이 안되는데?