Based on This Following Abstract Taken from a 2012 Issue

Multiple Choice

based on this following abstract taken from a 2012 issue of Psychological Science . The authors of the paper examined the effects of an intervention on adolescents' enrollment in STEM courses. Instructors are advised to use the reference below to retrieve the original abstract for their use.
Harackiewicz, J. M., Rozek, C. S., Hulleman, C. S., & Hyde, J. S. (2012) . Helping parents to motivate adolescents in mathematics and science an experimental test of a utility-value intervention. Psychological Science, 0956797611435530.
-Which of the following claims is best supported by information from the abstract?

A) There were equal numbers of males and females in the intervention and control conditions.
B) The researchers controlled for socio-economic status (SES) in their analysis.
C) Participants in the intervention group were more likely to major in a STEM field in college as compared to participants in the control group.
D) The researchers likely randomly assigned participants to either the intervention or the control condition.