Because it isn’t a commonly known measure anymore, simply is not used much.
Answer:
heart wrenching, difficult, struggle, trial, etc.
The answer would be <span>a) mystery fiction
Such as with Sherlock Holmes, the character is trying to solve the mystery, but oftentimes, the reader is also encouraged to find out the solution to the mystery before the book itself even knows! It tests the reader's ability to</span><span> find clues in the text while challenging their stereotyping behavior.</span>