This type of classification used to be used when classifying the protostome organisms.
In this type of organism, the oral cavity develops from the blastophore, the initial cavity in the gastrula, an early stage of the development of the embryo.
        
             
        
        
        
Answer:
The correct option is B. The stage of a virus where it is activated to perform the function for which it was intended is referred to as the triggering phase.
Explanation:
The life cycle of a virus consists of the following stages:
The Dormant phase:
In this phase, the virus doesn't take any action. It just manages to get into the system or software.
The Propagation phase
In this phase, the virus makes copies of itself.
The Triggering Phase
In this phase, the virus performs its function.
The Execution Phase
In this phase, the destruction made by the virus can be seen.  
 
        
             
        
        
        
Answer:
b. overflow incontinence
Explanation:
Overflow incontinence is a medical condition that is characterized by uncontrolled leakage of urine from filled urinary bladder in the absence of the urge to urinate by the affected individual. 
It is a condition that is usually caused by blockage of bladder outlet or weakness in the muscle responsible for the expulsion of urine from the bladder.
The correct option is b. 
 
        
             
        
        
        
Answer: 
FERTILIZATION
Explanation:
Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually reproducing organisms alternate between haploid and diploid stages. However, the ways in which reproductive cells are produced and the timing between meiosis and fertilization vary greatly.