Step 1: Understanding the concept of motivation. 
  
Motivated employees are typically rewarded in a way that encourages them to continue their positive behaviors. Positive rewards are a key component of motivation in the workplace. 
Step 2: Analyzing the options. 
  
(A) Negative: Incorrect. Negative reinforcement is usually not an effective motivator for employees. 
  
(B) Positive: Correct. Motivating employees with positive rewards (such as recognition, bonuses, etc.) helps reinforce desired behaviors. 
  
(C) Intrinsic: Incorrect. While intrinsic motivation is a type of internal motivation, the question asks about rewards, which typically involve external factors. 
  
(D) None of these: Incorrect. Option (B) is the correct answer. 
Step 3: Conclusion. 
  
The correct answer is (B) Positive, as motivating employees is typically done by rewarding them positively.