B. noun  
because an adjective is a describing word so it is not that and a verb is a movement and a conjunction is ,and but, or so the correct answer is  B. noun
        
             
        
        
        
Answer:
uhhh dont even no wat that is
Explanation:
 
        
             
        
        
        
The correct answer is D. Sigmund Freud
He was the creator of Psychoanalysis which was based around  the subconscious and which sparked uncountable amounts of papers and books on the human mind. His work was continued and expanded by Jung. Marx, Einstein, and Heisenberg, dealt with other things such as physics, or in Marx's case political philosophy.