**Core Concept**
Roll Back Malaria (RBM) is a global partnership that aims to reduce the burden of malaria worldwide. RBM focuses on improving access to effective malaria treatment and prevention measures, particularly in Africa. The partnership emphasizes the use of insecticide-treated bed nets, strengthening health systems, and training healthcare workers as key strategies to combat malaria.

**Why the Correct Answer is Right**
The correct answer, "Development of newer insecticide," is not a primary focus of the Roll Back Malaria initiative. RBM emphasizes existing interventions such as insecticide-treated bed nets, rather than developing new insecticides. The development of newer insecticides may be a research priority, but it is not a core strategy of the RBM partnership.

**Why Each Wrong Option is Incorrect**
**Option A:** Insecticide-treated mosquito nets are a key component of the Roll Back Malaria strategy, providing effective protection against malaria transmission.
**Option B:** Strengthening health systems is a crucial aspect of RBM, as it enables the effective delivery of malaria prevention and treatment services.
**Option D:** Training of health workers is also a critical component of RBM, ensuring that healthcare providers have the necessary skills and knowledge to diagnose and treat malaria effectively.

**Clinical Pearl / High-Yield Fact**
A key challenge in Roll Back Malaria efforts is the development of resistance to insecticides used in bed nets, highlighting the need for integrated approaches to malaria control, including the use of multiple prevention measures and targeted interventions.

**✓ Correct Answer: C. Development of newer insecticide**