Answer: it will take months to years before you can die from blood clots.
Explanation: they don’t dissolve right away.
Answer: Smoking
Explanation: Smoking causes a number of negative health effects, one of which is cardiovascular disease. Smoking increases the formation of platelets in the blood vessels, also reduces blood flow to the heart, and reduces the amount of oxygen.
I think the answer is a because if it wasn't many bad ideas for medicine will come and we could get hurt from them.
Answer:
White blood cells kill pathogens when your skin becomes infected
