_ dangerously a person lives, _ chances of his death in young age.

🧠 Explanation:

In the sentence "_ dangerously a person lives, _ chances of his death in young age," the phrase "the more/the more" fits, forming a correlative structure emphasizing proportionality: the more dangerous the lifestyle, the higher the risk. This grammatical construct is common in English for cause-and-effect relationships. Understanding it enhances clarity in advisory or analytical writing, vital for discussing risk factors in health, safety, or behavioral studies, ensuring precise communication of proportional outcomes.