HMS, HAG 2020 HSC 9 MC Which risk factor contributes to the leading cause of cancer death in males in Australia? High-fat diet Tobacco smoking Physical inactivity High blood pressure Show Answers Only \(B\) Show Worked Solution B is correct: Tobacco smoking is the major risk factor for lung cancer. Other Options: A is incorrect: High-fat diet linked to bowel cancer not lung cancer. C is incorrect: Physical inactivity increases various cancers but not leading cause. D is incorrect: High blood pressure linked to cardiovascular disease not cancer.