Answer:
Option A
Explanation:
Thyroid is primarily caused by lack of iodine but there are other reasons as well that lead to increased size of the thyroid gland. Some of these reason is 
a) over- or underproduction of thyroid hormones
b) Nodules in the glans
Some times, due to overstimulation immune system itself attack the thyroid gland thereby producing excess thyroxine and hence causing  the thyroid to swell
Thus, Option A is correct
 
        
             
        
        
        
Nucleus, Mitochondria, and Lysosomes are found in a cell. Plastid is the odd one. 
        
                    
             
        
        
        
I think it’s DNA replication if i’m not mistaken
        
             
        
        
        
Answer:
B.Evolution, natural selection
Explanation:
 Charles Darwin is known as the "Father of Evolution" because he proposed the idea of evolution by way of natural selection.