I believe b is the correct answer
        
                    
             
        
        
        
Species have similar characteristics, but they are rarely, if not never, identical; the difference between them is variation!
Hope this helps! :) 
 
        
             
        
        
        
2 would be A because fertilization is where the sperm cell and egg unite. 3 would be C because in the picture you can see how the division is occuring.
        
             
        
        
        
The invertebrate chordates include Tunicates and lancelets.
<h3>What are invertebrate chordates?</h3>
They are a group of chordates that possess notochords somewhere in their life span but end up not possessing the vertebral column. They possess all the characteristics of chordates. 
Invertebrate chordates include the Urochordata which are the Tunicates and the Cephalochordata which are the lancelets.
More on invertebrate chordates can be found here: brainly.com/question/1969651
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