An abrupt drop in mortality due to a specific disease from one year to the next is most likely due to:

It is due to a change in the International Classification of Disease. The International Classification of Diseases (ICD), having an official name of International Statistical Classification of Diseases and Related Health Problems, is the global standard tool for epidemiology, health management and clinical purposes. 

someone i feel is a leader in my life id have to say would be my mother because she has give me great advice in life and got me out of tough situations. some characteristics she has are creativity, honesty, commitment, respect for others, and communication. one example of a situation when she demonstrated leadership was when i was working late on homework and i started to get stressed and got upset, she asked me if i needed some , and she me with my work. she demonstrated communication and commitment.

i don't know if this is exactly what your looking for but i hope this !

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explanation:

we're are the selections to pick from?