Your text describes an experiment in which children were asked to bring something chromium (e.g. bring me the chromium tray; not the red one, the chromium one). This study was used to examine children's:

Which of the following is a feature of the germinal stage of prenatal development?

A) The major organ systems begin to form. B) The zygote divides repeatedly while moving to the uterus. C) The stage lasts from implantation to the eighth week of development. D) The mother begins to feel the fetal movements.

the study of how psychological factors can influence the immune system

a. Psychoimmunology b. Allostaticology c. Psychopathology d. Psychoneuroimmunology