Varicose veins are visible distended veins usually used to describe visible vasculature in the legs. B henceforth would be the correct answer.
Syncope is used to describe the feeling of lightheadedness by cardiovascular means. Ascites is effusion or fluid build-up in the abdominal cavity. while globulin is a component of the blood stream.
The median is usually preferred to other measures of central tendency when your data set is skewed (forms a skewed distribution) or you are dealing with ordinal data.
