The correct answer is d. Please give me brainlest I hope this helps let me know if it’s correct or not thanks I appreciate it
        
                    
             
        
        
        
Answer:
Muscles connect to your skeleton and they contract and move the skeleton along.
Explanation:
 Your skeletal system is made up of cartilage and calcified bone that work together. They help the process of movement happen in a smoother manner. The calcified bones of your skeleton also work with the circulatory system.
 
        
             
        
        
        
Answer:
Explanation:Explanation: Classification of organisms is a hard task cause many organisms have their differences and similarities, whereby making it very complicated in classifying organisms.. All living organisms are classified into groups based on very basic, shared characteristics