The correct answer is C. Cause and effect
Step-by-step explanation:
Cause and effect organizational structure focus on describing and analyzing an event (cause) and the consequences this event had (effect) including either short-term, middle-term or long-term consequences. Jennifer's topic and essay should follow this organization because she aims at describing the decision of the hometown school that ended physical education programs along with the effects or consequences this decision had including an increase in the rate of childhood obesity in the school which means she describes both a cause and the consequence of it. Thus, the organization structure Jennifer should use is Cause and effect.