The correct answer is C) "These instincts-both innate and built over time--are key to the success of some of the most dangerous missions ever attempted."
The quotation that supports the idea that instinct is an important part of grit is "These instincts-both innate and built over time--are key to the success of some of the most dangerous missions ever attempted."
This is correct because instincts are that inner part of you that communicates with you in the key moments before making important decisions in your life. Let's have in mind that past experiences and previous life decisions and actions help you gain the knowledge, that combined with your instincts,, allow you to make a much better decision in the present time. And what follows is a true, committed work with perseverance to be successful.
