The answer is A Evaluation
The description talks about Richard's work, it resembles a manager's evaluation -mostly during training processes in some jobs-
Incorrect answers:
B Experience
Experience cannot be used as the correct word because all the information is related to Richard's work if in any case, a person would use experience, the expression should be in my experience working with Richard...
C) Guess
A lot of precise and concise elements are enlisted in this description which does not leave any space for expectations
D) Trial
Trial can only be used in a legal context and we do not have any evidence that this is a legal situation.
 
        
             
        
        
        
The aggressive preparation of war was growing along with nations armies during the buildup to both World War I and World War II. This was due in part to nationalism. 
        
             
        
        
        
It is ela. The punctuation go with the sentence or the grammar would be wrong! Good luck.
        
             
        
        
        
The correct answer should be D. Sense of accomplishment
That is because all of the other 3 are not internal, but external motivation.