I think it’s d. 
search it up to make sure
        
             
        
        
        
DNA is a nucleic acid molecule that undergoes a replication process to form a new daughter strand. The blue segment is the parental strand, and the yellow is the daughter strand. 
<h3>What is replication?</h3>
Replication is the process of the central dogma that duplicates the copy of the parent strand into new daughter strands. The two helixes of the parent strand get separated to make the complimentary copy of the new strand.
The daughter DNA is semi-conservative and are complementary structure made from the duplication of the parent strand with the help of the replication enzymes. 
Therefore, the daughter strands are the semi-conservative copies of the parental strand.
Learn more about replication here:
brainly.com/question/16464230
#SPJ1
 
        
             
        
        
        
Answer: This cell will not respond quickly to what work do they need to do.
Signalling will not be strong so, mechanical work won't be done properly.
As mitochondria is mainly responsible for the production of ATP, these cells will not produce enough energy.
There may be difficulty in the contraction of this cell.
Homeostasis may not be maintained properly. 
 
        
             
        
        
        
Energy in a system is doing work such as kinetic and potential energy, that helps things move. Also more such as chemical, heat, thermal, etc.
        
             
        
        
        
D is correct. Cool air sinks, which forces warm air to rise. 
Convection is when warm material rises and cool material sinks
Hope it helps