fertilization comes first
it is followed by cleavage which is the rapid cellular division which forms the blastula
then comes gastrulation where the 3 germ layers are formed.
followed by organogenesis which consists first forms the organs and then comes the specialization 
Therefore your answer would be B
        
             
        
        
        
I think it’s a. 12 
Explanation:if it’s wrong kill me
 
“Tell me if I’m right”
 
        
             
        
        
        
Out of the following given choices
a) Brooke’s finger accidentally grazes the hot
iron; she immediately yanks her hand away.
<span>
b) After a satisfying evening meal, Callum
relaxes in front of the television.
<span>
<span>c) Walking toward her car is a deserted parking
garage one night, Danica is surprised by a strange man appearing from nowhere.</span>
<span>
<span>d) Emmeline feels queasy as she approaches the
front of the class to give a speech; suddenly, her throat goes dry.</span>
 
<span>
The answer is B. The
parasympathetic nervous system is part of the autonomic nervous system that
regulates the unconscious actions of the body.  The system is regarded as significant in the ‘rest-and-digest’
activity and also the ‘breed-and-feed’. </span></span></span></span>