Answer:
B. He learned in the hopes of improving his life as a slave,if not total escape from slavery.
 
        
             
        
        
        
Answer:
A. 29.4 Joules
Explanation:
Given parameters: 
Mass of the book  = 1.5kg 
Height of lift = 2m 
Unknown: 
Potential energy acquired  = ? 
Solution: 
Potential energy is the energy due to the position of a body. 
 Mathematically; 
        Potential energy  = mgh 
m is the mass of the body 
g is the acceleration due to gravity = 9.8m/s² 
h is the height
      Potential energy  = 1.5 x 9.8 x 2 
      Potential energy  = 29.4J