Aclient with bipolar mood disorder, manic episode, says to the nurse, "i don't know what i'm doing here. i never felt better in my life; i've got the world on a string around my finger." what is the nurse's most therapeutic response to this comment?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of