If you are a trained athlete or a person who enjoys recreational physical activities, your performance will be better and you will recover sooner if you eat a well-balanced diet, drink enough fluids, have good physique and train properly. Only a few dietary supplements have enough scientific evidence to show that they can improve certain types of exercise and physical performance. If interested, athletes could use these supplements if they have a good diet, train properly and get advice from a health professional or an expert in sports medicine.
If you wanted to cut down your risk for developing cancer, it would be best if you avoided tobacco products which is option C. Tobbaco products contain a ginormous amount of harmful ingredients which often lead people to develop cancer over time.
Red blood cell antibodies may show up in your blood if you are exposed to red blood cells other than your own. Antibody serology tests check for the presence or level of specific antibodies in the blood.