An endoskeleton of calcified cartilage
        
             
        
        
        
Oceanography, geology, meteorology, astronomy, and environmental science
        
                    
             
        
        
        
The best answer to go with is b you’re welcome
        
             
        
        
        
Lifespan is an indicator that measures the average of the maximum number of years a human can live.
<h3>What is lifespan?</h3>
It is the number of years that a newborn can live according to the standard of mortality by age of the population of its country.
In other words, it is a concept that only makes sense for one generation and is obtained as part of a mortality table that refers to the average number of years that a person is expected to live after birth.
Therefore, we can conclude that lifespan is an indicator that measures the average of the maximum number of years a human can live.
Learn more about lifespan here: brainly.com/question/11445304
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