1) A formalized idea or set of principles that attempts to define and explain a phenomenon is called .

Theory

Explanation:

Theory -

It refers to the type of process , which helps to define the phenomenon of any activity , experiment or study , is referred to as a theory .

The theory gives the complete , brief information and the numerical data about the given process , in a very explainatary manner .

Hence , from the given statement of the question ,

The correct term is theory .

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )

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