Improvements in _____ Have Corresponded to greater Reductions in Infant

Multiple Choice

Improvements in _____ have corresponded to greater reductions in infant mortality,while small improvements in infant mortality in the past few decades are largely due to _____.

A) technical advances in medical care;infectious disease control and sanitation
B) infectious disease control and sanitation;the industrial revolution
C) infectious disease control and sanitation;technical advances in medical care
D) vaccination rates: infectious disease control and sanitation