The idea that observed phenomena could be explained on the basis of clear and distinct ideas is called
ideal reasoning
inductive reasoning
deductive reasoning
instinctive reasoning

Deductive reasoning.

Explanation:

This is what my text says,

" At about the same time as Bacon, French mathematician and philosopher Rene Descartes was attempting to account for observed phenomena on the basis of what he called clear and distinct ideas. This is known as deductive reasoning."

I am pretty sure this is right because it clearly states it in the text.

Have a meowgical day!

Also, there is another question called The idea that observations of natural events would lead to theories which would explain these events is called .

ideal reasoning

inductive reasoning

deductive reasoning

instinctive reasoning

the answer to it is inductive reasoning because the text says

"One of the early writers on the scientific method was the English philosopher and statesman Francis Bacon. He wrote in the early seventeenth century that observations of natural events would lead to theories explaining these events. This is the method known as inductive reasoning."

Hope that helps too!