This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
All of the following factors are responsible for resurgence of malaria, except: 
Select and explain. 
A. Drug Resistance in Parasite, B. Insecticide Resistance in vectors, C. Antigenic mutations in parasite, D. Use of bed nets
D: Use of bed nets
Answer: D: Use of bed nets 
Explanation: Mosquito nets are a personal protection measure from mosquito bites during sleep. They are not responsible for resurgence of malaria. Ref: Preventive and Social Medicine, by K.Park, 19th edition, Page 210, 219, 346, 628; Harrison's Principles of Internal Medicine, 16th edition, Page 1221.