Answer:
Knowledge
Explanation:
Knowledge could be defined as information, facts, skills gathered through experience or education. In the case above, the student has knowledge of how his "class average" works and so he "knows" that if he works hard enough, he can improve it to a B. However if he didn't have this knowledge, he probably would have started panicking and already think there isn't any hope of improving his average.
Where is the question so I can answer
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. The step that <span>describes the responder's responsibility to protect him- or herself from injury at a weapons of mass destruction (WMD) incident is the ALL-HAZARD APPROACH. Hope this helps.</span>
B.) Sundiata Keita created the Mali Empire.