Before any data are collected,which of the following must be in place to specify a plan to collect and utilize data so that desired information can be obtained with sufficient precision and/or so that hypotheses can be tested properly?

A) The research design.
B) The census.
C) The content analysis.
D) The informed consent.
E) The sample frame.

Research Design

A detailed plan or strategy outlining how a research project will be conducted, including methods for collecting and analyzing data.

Informed Consent

A process in research and healthcare where individuals are given information about a procedure or study, understanding the risks and benefits before agreeing to participate.

Sample Frame

A list or database from which a sample is drawn for research, representing the larger population intended to be analyzed.