**Core Concept**
The annual parasite index (API) is a measure used to assess the intensity of malaria transmission in a given area. An API of less than 2 is considered low transmission, and the goal is to prevent further transmission and control the disease.

**Why the Correct Answer is Right**
In areas with low malaria transmission (API < 2), the focus shifts from control to elimination. The correct approach is to implement surveillance and monitoring strategies to detect and respond to any new cases or clusters of infection. This includes strengthening health infrastructure, enhancing case detection and reporting, and implementing targeted interventions to prevent further transmission. **Why Each Wrong Option is Incorrect** **Option A:** This option is not directly related to the management of malaria in low transmission areas. While surveillance is crucial, this option does not specifically address the need for targeted interventions. **Option B:** This option is incorrect because it implies a focus on mass drug administration, which is not an effective strategy in low transmission areas. **Option C:** This option is incorrect because it focuses on vector control measures, which are more relevant in high transmission areas. **Clinical Pearl / High-Yield Fact** In low transmission areas, the focus shifts from control to elimination, and the key is to detect and respond to new cases or clusters of infection. This requires strengthening health infrastructure and implementing targeted interventions. **Correct Answer: C. Intensified surveillance and monitoring.