Chlamydia is by far the most common today.
It is sex-linked: genetic red–green color blindness affects males<span> much </span>more<span> often </span>than females<span> because the genes for the red and green color receptors are located on the X chromosome, of which </span>males<span> have only one and </span>females<span> have two.</span>
I just researched a little bit, and got this answer: To ensure that your refrigerator is doing its job, it's important to keep its temperature at 40 °F. so I would say C is the answer... I think