Answer:
C, basic contractile unit of muscle fiber.
Explanation:
If you read the definition of sarcomere, this is what it says: "<u>A sarcomere (Greek σάρξ sarx "flesh", μέρος meros "part") is the complicated unit of striated muscle tissue. It is the repeating unit between two Z lines. Skeletal muscles are composed of tubular muscle cells (myocytes called muscle fibers or myofibers) which are formed in a process known as myogenesis</u>."
hope this helps.
 
        
             
        
        
        
Answer:
combustible        ....................
 
        
                    
             
        
        
        
The reproductive system is a group of sex organs that work together for the purpose of sexual reproduction. Hope this helped!