'Who or what is the source of the data?' is a fundamental question typically asked at which planning stage of a research design?
A) Selection of research design
B) Sample selection
C) Data analysis and evaluation
D) Problem definition

Question

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The Answer of 'Who or what is the source of the data?' is a fundamental question typically asked at which planning stage of a research design?
A) Selection of research design
B) Sample selection
C) Data analysis and evaluation
D) Problem definition

'Who or What Is the Source of the Data?' Is