D. He don't know what he's talking about. It should say "He doesn't know what he's talking about."
Answer:
I will answer the question but you have to be more specific like the time and in the military or in the public so don't flag this answer cause I need more info and when I get It I will tell you
Explanation:
<span>an extremely wicked or cruel act, typically one involving physical violence or injury.</span><span />