Lung cancer is very hard to treat and has usually already spread by the time it's discovered. This is because people who have symptoms usually hold off on seeing a doctor, thinking it is something else, or that it will go away. Early detection is extremely important in fighting this disease. Seeing a doctor right away with any signs like chronic cough, coughing up blood or any other concerns is paramount.
Answer:
a
d
c
b
b
Explanation:
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Writing and speaking in a professional manner means to not use informal language and use understandable but advanced vocabulary.
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