The Basic Rule That Should Be Followed by All Researchers

Multiple Choice

The basic rule that should be followed by all researchers when beginning the data collection process is to

A) begin with secondary data,and then proceed if necessary to collect primary data.
B) always start by consulting the statistical abstract of the United States.
C) begin with primary data,then supplement if needed with secondary data.
D) always investigate external sources of secondary data first.
E) design a field experiment to collect primary data.