Good, but its most like a k12 question, so its d

Determine whether the following symbols are universal or contextual

At a price of books will be both supplied and demanded. $10 $20 $30

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system