Answer:
A. Rely on primary sources of information and avoid secondary sources.
Explanation:
Decision means establishing a goal. A goal is a set of objective which a firm seek to achieve.
Primary sources of information are information obtained directly about people or an event. They include statistical data, accounts of eye witness, report of newspaper, speeches etc. In primary source of information, information are gotten from people who have direct contact with it.
Secondary source of information are information gotten either through interpretation or quotes . Examples include books on a topic, articles.
It is important that effective decision maker rely on primary source of information because he or she has a first hand experience or account of information on which decision will be made rather that secondary sources which rely on quotes and may sometimes be exaggerated.