To solve the question "Which of these sets is correct?", we need to analyze the options provided in the video transcript regarding different diseases, their causative agents, and associated symptoms.
### Step-by-Step Solution:
1. **Identify the Causative Agents and Diseases**:
- The first option mentions **Plasmodium falciparum**. This is known to cause **Malaria**. The types of malaria associated with this organism include:
- Malignant Tertian Malaria
- Cerebral Malaria
- Black Water Fever
- The second option mentions **Trypanosoma gambiense**, which is known to cause **Sleeping Sickness** and is transmitted by the **Tsetse fly** (Glossina). The symptoms include Winterbottom's sign.
- The third option mentions **Wuchereria bancrofti**, which is associated with **Elephantiasis** and **Filariasis**.
- The fourth option refers to **Dysentery**, which is characterized by symptoms such as constipation, abdominal pain, and mucus in stools.
2. **Evaluate Each Set**:
- The first set includes **Plasmodium falciparum**, **Quartan Malaria**, **Relapse**, and **Mosquito**. However, Quartan Malaria is caused by **Plasmodium malariae**, not **Plasmodium falciparum**, making this set incorrect.
- The second set includes **Trypanosoma gambiense**, **Glossina**, **Sleeping Sickness**, and **Winterbottom's sign**. This set is correct as all components are accurately matched.
- The third set includes **Wuchereria bancrofti**, **Elephantiasis**, and **Filariasis**. This set is also correct as it accurately describes the disease and its causative agent.
- The fourth set refers to **Dysentery** but does not provide a causative agent, making it incomplete.
3. **Conclusion**:
- The second and third sets are correct. However, if the question is asking for a single correct set, the second set is the most specific and complete.
### Final Answer:
The correct answer is the second set: **Trypanosoma gambiense**, **Glossina**, **Sleeping Sickness**, **Winterbottom's sign**.
