1 is false, waves can't propagate in a vacuum. 
 
        
             
        
        
        
Answer: Reward Power
Explanation:
Reward power is the power persisted by any manager or superior position holding person to provide reward to employees and workers for their outstanding working so that it can influence them perform better in future. This reward can be in form of salary increment, bonus, promotion etc.
According to the question, reward power is used by supervisor for providing gift certificate to employee for his good job as a reward.It is for influencing his job in the project.  
Other options are incorrect because expert power and referent power are not the measure for influencing any employee by providing rewards. Thus,the correct option is reward power.  
 
        
             
        
        
        
<span>Narcolepsy.
       
Narcolepsy is a constant sleep issue portrayed by overpowering daytime tiredness and sudden urge to sleep. Individuals with narcolepsy frequently think that its hard to remain conscious for drawn out stretches of time, paying little attention to the conditions. Narcolepsy can cause genuine interruptions in your day by day schedule</span>
        
             
        
        
        
The left hemisphere predominates in language skills for right-handers and most neutrals (left-handers), but neutrals are more variable.
The two hemispheres are connected by a thick band of nerve fibers known as the corpus callosum, which consists of about 200 million axons. The corpus callosum allows the two hemispheres to communicate with each other, allowing information processed on one side of the brain to be shared with the other side.
[Geology] Relating to a strike-slip or left-hand fault where the block above the fault shifts to the left. Also called left heart spondylolisthesis. If it moves to the right, the relative movement is said to be clockwise. A counterclockwise rotation or spiral 
[Geology] A strike-slip or right-hand fault in which the blocks on the fault move to the right. If it moves to the left, the relative motion is said to be sinusoidal. Clockwise or helical rotation is also called right-hand rotation.
Learn more about hemisphere at
brainly.com/question/25641436
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<span>(D. encyclopedia.)
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