Which of the following is the best model of the type of answer you should provide in determining the identity of hormones during Lesson 2? Question 5 options: Hormone #3 must be growth hormone because I already used the other hormones in my other answers. Hormone #2 is GnRH because both the pituitary (12.8 mg in the control vs. 13.5 mg) and testes (320 dg in the control vs. 615 dg) increased in weight while the other organs did not show a significant difference in size. Hormone #5 is ACTH because the adrenal gland got bigger. Hormone #1 is GnRH.