Aristotle's approach to philosophy was to- - a concentrate on improving his skills at rhetoric and other such pursuits. b search within himself for an overarching truth. c analyze and classify things based on investigation and observation. d visit various oracles to ask the gods for answers.

The correct answer is the option C.

Explanation:Aristotle examined the phenomena of the natural world. He practised a different style of science: systematically gathering data, discovering patterns common to whole groups of animals, and inferring possible causal explanations from these, this style is common in modern biology when large amounts of data become available in a new field.