The correct answer is by facilitated diffusion.  
The procedure of continuous passive transport of ions or molecules through a semi-permeable membrane with the help of particular transmembrane integral proteins is known as facilitated or passive-mediated transport or facilitated diffusion.  
It is a modification of osmosis incorporating a proteinaceous channel via which an extracellular solute can enter a cell in the absence of energy.  
 
        
             
        
        
        
Acute diseases are sudden, severe, and short term only. They quickly appear and worsen without warning and they disappear. Examples of this are flu or colds.  
Chronic diseases, on the other hand, are long-developing diseases. The symptoms have been present for long time and it worsens as time progresses. Examples of this are Osteoporosis and heart disease.
        
             
        
        
        
<span>D. multiplying by the quantity of 100. When you multiply a number by 100 your doing this :
1•100=100 or 20•100=2000.
A trick for this is just giving the number the 10, 100, or 1000's zeros.
Hoped I helped!</span>