Option C
Costly to imitate criteria for sustainable competitive advantage
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Explanation:</u></h3>
Sustainable competitive advantages are business assets, properties, or skills that are hard to replicate or exceed; and render a higher or complimentary long term situation over competitors.  A company must produce distinct goals, plans, and methods to create a sustainable competitive advantage.
  It needs huge expenditure in time and money to create a brand. It demands very limitedly to destroy it. A good brand is precious because it prompts customers to favor the brand over competitors. A unique product or service increases customer support and is less suitable for a competitor to imitate.
 
        
             
        
        
        
False - because not every business plans work
        
             
        
        
        
Answer:
Natural experiment
Explanation:
Natural experiment is the study of empirical, which comprise of the individuals who are exposed to the control as well as the conditions of the experimental , which are determined or evaluated by the nature or through other kinds of factors that are outside the person control.
The procedure of governing the exposures resemble the random experiment. This experiment are not controllable and are the observational studies. So, the event is naturally occurring, then it is an example of the natural experiment.
 
        
             
        
        
        
Answer:
60.11%
Explanation:
Weight of stock C = Value of stock C / total value of portfolio
225 x $42 / (225 x $42) + (190 x $33) = $9450 /15720 = 60.11%