Sujin asked her psychology professor, "why is the brain located in the head? " her professor replied, "that's a really good question. although there are probably lots of reasons, i'm not sure of the one best answer. let's find out together this semester." which principle of critical thinking was sujin practicing?

Sujin is practicing being willing to wonder about things.

A principle of critical thinking is having an open mind and being able and wanting to wonder about many different things. It's not taking everything that you know or think you know for granted and realizing that there is much more to everything in the world than meets the eye. It's questioning and wondering.

answer; i do believe its (b) 12.5 years of age;