The correct answer is c.antipsychotic drugs. 
<span>Drugs that block dopamine receptor sites are dopamine antagonist (antidopaminergic). Dopamine antagonists are a type of drugs which blocks dopamine receptors by receptor antagonism. Those antagonists are used as antipsychotics, so they have found use in treating schizophrenia, bipolar disorder, and stimulant psychosis. Also, they can be antiemetics used in the treatment of nausea and vomiting or used as <span>anti-depressants.</span></span>
        
                    
             
        
        
        
It's D.diploid
<span>in the life cycle of plants with alternating generations) the asexual and usually diploid phase, producing spores from which the gametophyte arises. It is the dominant form in vascular plants, e.g., the frond of a fern.</span>
        
                    
             
        
        
        
Al crossmultiplies with 2
S crossmultiplies with 3 
Al2S3
        
                    
             
        
        
        
pretty sure it is an ultrasound