Use of language/ conventions
Chi or the ct in ect can sound like k
The answer is D, the other answers are subtracting and multiplying.
The 'dark past' is most likely referring to a period of time marked by traumatic suffering. The full line seems to be saying that the 'dark past' taught these people faith. People often only have faith to hang on to in times of suffering. So, I'd say the answer is c.
