page 15 25. The graphs show data derived from a study investigating the effectiveness of the drug praziquantel (PZQ) on Ugandan children with symptoms of schistosomiasis. PZQ dose (mg/kg) 80 (Girls) 80 (Boys) 40 (Girls) 40 (Boys) Individual cure rate 0∙0 0∙0 0∙0 0∙0 1∙0 1∙0 1∙0 1∙0 0∙8 0∙8 0∙8 0∙8 0∙2 0∙2 0∙2 0∙2 0∙4 0∙4 0∙4 0∙4 0∙6 0∙6 0∙6 0∙6 PZQ dose (mg/kg) 80 (Girls) 80 (Boys) 40 (Girls) 40 (Boys) Individual cure rate PZQ dose (mg/kg) 80 (Girls) 80 (Boys) 40 (Girls) 40 (Boys) Individual cure rate PZQ dose (mg/kg) 80 (Girls) 80 (Boys) 40 (Girls) 40 (Boys) Individual cure rate Age 3 years Age 5 years Age 6 years Age 8 years At what age does the data suggest that children would receive most benefit by increasing the dose of the drug? A 3 years B 5 years C 6 years D 8 years [END OF SECTION 1. NOW ATTEMPT THE QUESTIONS IN SECTION 2 OF YOUR QUESTION AND ANSWER BOOKLET]