I’m pretty sure the answer is c
        
             
        
        
        
C Dermis because it’s not the others ones
        
                    
             
        
        
        
B, ocean trenches are formed after a underwater volcano has erupted.<span />
        
                    
             
        
        
        
Answer: Cytotoxic T cells
Explanation:
A Cytotoxic T cell is a cell whose activation is mainly aimed at destroying cells that are infected by virus. It is a type of white blood cells that destroys cancerous cells or cells that are impaired especially by viruses. A Cytotoxic cell is also known as T-killer cells, Cytolytic T cells, T lymphocyte.
Cytotoxic T cells destroy target cells by prearranged apoptoses. 
 
        
             
        
        
        
<span>The correct answer is D. Micromanipulation allows interaction with precision. This is done under a microscope. With micromanipulation, in-vitro fertilization has come true, and is helping thousands of parents to become parents.</span><span />