<span>The answer to this item is letter D. risk-taking. It is mentioned here that Thomas is already on his legal age, an adolescent who often seeks out potentially harmful situations without thinking about the results, and drinking alcohol is his way to vent-out, he is a risk-taker then since he is old enough to think about on the consequences of his action.</span>
Oxygen passes from inside the alveoli through the thin walls and dif- fuses into the blood. At the same time, carbon dioxide waste passes from the blood into the alveoli.