Marcelo Wonders If People Masturbate Because They Do Not Have

Marcelo wonders if people masturbate because they do not have partners available to have sex with. He predicts that people having frequent sex will masturbate less, and that people who have less sex will masturbate more due to their "deprivation." He creates a survey to ask people how frequently they currently have sex and how frequently they masturbate. He finds the opposite of his prediction! Marcelo's experience is an example of

A) why scientific methods can confuse our beliefs with inconsistent findings.
B) how scientific methods are inferior to intuition because people clearly masturbate when they do not have sexual partners available.
C) using scientific methods to test a hypothesis and gain information about sexuality.
D) an incomplete use of the scientific method.