Answer:
Because courage and determination are the most relevant and efficient indicators for the work to which the cadets would be related.
Step-by-step explanation:
"Grit: The Power of Passion and Perseverance" is a book written by Angela Duckworth and assesses the ability of 1200 cadets to complete an extremely dangerous and intensive training called "Beast Barracks." The training required strength, courage, determination and bravery and for this reason, the cadets' IQ was not a very effective indicator for determining those who would be able to finish the training.While it was important that the cadets were able to reason, the training required more than them courage and determination.