The CO2 test is most often done as part of an electrolyte or basic metabolic panel. ... This may cause an imbalance in your body's electrolytes. CO2 levels in the blood are affected by kidney and lung function. The kidneys help maintain the normal bicarbonate levels.
You should re read all the answers and then re read the paragraph to see what you are suppose to look for.
Walking away is a refusal skill that does not always work because by doing so you are often simply avoiding the problem. If you deal with the problem instead of walking away (ex. talk through it, sort through problems), you are dealing with the situation instead of just avoiding the situation as you would by walking away.