Consider the following diagram of a quasi-experimental design: Non R O_A1 X O_B2 Non R O_A1 O_B2This design represents the _____. A) nonequivalent groups design with a proxy pretest measure B) pretest-posttest nonequivalent groups design with additional pretest C) reversed-treatment pretest-posttest nonequivalent groups design D) interpretable pretest-posttest nonequivalent groups design

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This design is a nonequivalent groups design with a proxy pretest measure, indicated by the use of non-randomized groups (Non R) and the inclusion of a unique pretest (proxy pretest) measure (U1) before the intervention (X) and standard pretest and posttest measures (OS1, B1, A1, S1, B0).

Consider the Following Diagram of a Quasi-Experimental Design