A unsupported claim.
An unsupported claim is basically a claim, that has been said to be true, but has no way of being verified, as said in the question.
Hope it helped,
BioTeacher101
 
        
                    
             
        
        
        
Karen is NOT correct. This is because the sun's energy is a renewable resource. This means that its  use is sustainable hence it is a substance of economic value that can be replaced or replenished in the same or less amount of time as it takes to draw the supply down. Though the sun is a finite resource,  it cannot be depleted within human timescale.
 
        
                    
             
        
        
        
Photosynthesis occurs at the highest rate under the most intense light
        
             
        
        
        
Hi there!
The most important thing to note here is that eukaryotic cells have nuclei. This is the circular blob-like organelle which encases the DNA. Some other differences eukaryotic cells have over prokaryotic cells include more complicated organelles which are membrane bound.
If we look at these images, what we are looking for is a nuclei, as this will appear most evident. When we look at A and B, we can see a circular organelle that is extremely prominent. However, with C and D, that does not appear. C specifically, the nucleic code is exposed and not membrane bound, meaning it is not prokaryotic. D does not appear to contain a nucleus or any genetic material.
Thus, your answer is A and B.
Hope this helps!
 
        
             
        
        
        
<span>20 amino acids exist. :^)</span>