What statement is true of expert testimony involving questioned documents?
A) A graphologist specializes in analysis of the physical qualities of questioned documents.
B) A forensic document examiner analyzes handwriting to determine the personality of the author.
C) A graphologist is a more respected expert witness since their analysis is scientifically based.
D) A forensic document examiner analyzes the physical qualities of documents and handwriting characteristics.

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.