Which Phase of Demographic Transition Sees a Country Modernize and Experience

Which phase of demographic transition sees a country modernize and experience a rapid spread of new technological developments, creating major changes and improvements in public health (such as disease control, public sanitation, and health promotion) , individual health and longevity, work and leisure lifestyles, and quality of life?

A) Technoplosion
B) Population explosion
C) Population implosion
D) Demoplosion