b) ethics. d) scientific progress at all costs. ANS: c DIFF: 2 PG: 1-33 TYPE: R OB: 7 169. When research cannot be carried out with human subjects, researchers a) must abandon those issues. c) rely on theoretical models. b) often rely on volunteers. d) often use animals. ANS: d DIFF: 2 PG: 1-34 TYPE: R OB:…