The italicized word or phrase <em>a three-pronged </em>(if this is italicized, we cannot possibly know) is attributive, as it is an adjective to describe the plan.
Yes, fatigue seriously impairs driving ability. Fatigue slows reaction time, decreases awareness, impairs judgement, increases your risk of driving.
The sentence "Yeah, but there was too much to study. <span>I guessed on all the answers! Now I’m just keeping my fingers crossed." shows bad study habits.</span>
