Descartes doubting let him to conclude that there are two worlds. One is the objective scientifically knowable material world and the other is in some sense:

Question

Quizplus · Accepted Answer

Descartes doubting method led him to conclude that there are two worlds, one is the objective scientifically knowable material world, and the other is a subjective world of human consciousness and a world only known through introspection. He considered himself a thinking being and thus included this in his theory of two worlds. Therefore, the correct answer is D, all of these.

Descartes Doubting Let Him to Conclude That There Are Two