The scientific method of decision$-$making is a systematic and structured approach that involves the following steps:

Define the problem: Identify the issue or problem that needs to be solved.

Research: Gather information and data about the problem.

Hypothesis: Develop a hypothesis or theory about the problem.

Test: Test the hypothesis using experiments or observations.

Analyze: Analyze the results of the test and draw conclusions.

Repeat: Repeat the process until a satisfactory solution is found.

The various types of complexity that can impact the scientific method of decision$-$making include:

Complex problem: A problem that is difficult to define or understand due to its complexity.

Lack of data: Insufficient data or information about the problem.