Which of these sets is correct ?

Options

A. Plasmodium falciparum, quartan malaria, relapse, mosquito
B. Trypanosoma gambiense, Glossina, sleeping sickness, winterbottom's sign
C. Wuchereria bancrofti, elephantiasis, rhabditiform larva, mosquito
D. Entamoeba histolytica, dysentry, binucleate cyst, colon

Answer

To determine which of the provided sets is correct, we will analyze each option step by step.

### Step 1: Analyze Option 1
**Set:** Plasmodium falciparum, Quaternum malaria, Relapse, Mosquito

- **Plasmodium falciparum:** This is a protozoan parasite that causes malaria.
- **Quaternum malaria:** This term is not commonly used; it may refer to "quartan malaria," which is caused by Plasmodium malariae, not P. falciparum.
- **Relapse:** In malaria, relapse can occur due to the presence of dormant liver stages (hypnozoites) in certain species like P. vivax and P. ovale, but P. falciparum does not typically cause relapse.
- **Mosquito:** Malaria is transmitted by Anopheles mosquitoes.

**Conclusion:** This set is incorrect due to the misuse of "Quaternum malaria" and the misunderstanding of relapse in relation to P. falciparum.

### Step 2: Analyze Option 2
**Set:** Trypanosoma gambiense, Glossina, Sleeping sickness, Winterbottom sign

- **Trypanosoma gambiense:** This is a protozoan parasite that causes African sleeping sickness.
- **Glossina:** This is the genus of tsetse flies, which are the vectors for T. gambiense.
- **Sleeping sickness:** This is the disease caused by T. gambiense.
- **Winterbottom sign:** This refers to the swelling of lymph nodes (lymphadenopathy) in the neck, which is a symptom of sleeping sickness.

**Conclusion:** This set is correct as all components accurately relate to each other.

### Step 3: Analyze Option 3
**Set:** Butylaria bancrofti, Elephantiasis, Raptidiform larva, Mosquito

- **Butylaria bancrofti:** This appears to be a misspelling; the correct term is Wuchereria bancrofti, a filarial nematode.
- **Elephantiasis:** This is a condition caused by Wuchereria bancrofti, leading to severe swelling.
- **Raptidiform larva:** This term is incorrect; the correct term is "microfilariae," which are the larval forms of filarial worms.
- **Mosquito:** Wuchereria bancrofti is transmitted by mosquitoes, specifically the Culex species.

**Conclusion:** This set is incorrect due to the misspelling and incorrect terminology regarding the larval stage.

### Step 4: Analyze Option 4
**Set:** Entamoeba histolytica, Dysentery, Binucleate cyst, Colon

- **Entamoeba histolytica:** This is a protozoan parasite that causes amoebic dysentery.
- **Dysentery:** This is the disease caused by E. histolytica.
- **Binucleate cyst:** While E. histolytica can form cysts, the term "binucleate cyst" is not typically used; it can form cysts with multiple nuclei.
- **Colon:** E. histolytica primarily affects the colon.

**Conclusion:** This set is partially correct, but the term "binucleate cyst" is misleading as it does not accurately represent the cyst stages of E. histolytica.

### Final Answer
The correct set is **Option 2: Trypanosoma gambiense, Glossina, Sleeping sickness, Winterbottom sign.**