This illustrates <span>absolute threshold. The correct option among all the options that are given in the question is the second option or option "B".
</span><span>A spot in the middle of the retina that only contains cones is called the fovea. The correct option among all the options that are given in the question is the third option or option "C".</span>
single-nucleotide polymorphism, I think this might be it. I hope it helps.
Is this like on a test or like homeowork?
To be able to compare the results to a sample without any of the independent variable added.
The answer would be C.
Hope this helps!
Please mark me brainliest
