Which of the following is an evidence-based method that draws on observation and experimentation?

A) critical thinking
B) structuralism
C) empirical approach
D) humanistic psychology

The empirical approach is an evidence-based method that draws on observation and experimentation. It involves gathering data through systematic and rigorous observation or experimentation and using that data to develop and test theories or hypotheses. Critical thinking is an important component of the empirical approach, but it is not a method in and of itself. Structuralism is a historical psychological theory that is not considered evidence-based, and humanistic psychology is a theoretical approach that emphasizes individual experiences and subjective feelings, which is not necessarily based on empirical data.