- Malaria: Presents with recurring fever episodes.
- Filariasis: Results in swelling of the lower extremities.
- Ringworms: Induces the formation of blood clots and excessive mucus in fecal matter.
- Amoebiasis: Manifests as scaly nail abnormalities.
Therefore, the accurate pairing is:
(A) - (IV), (B) - (II), (C) - (III), (D) - (I).
Final Answer:
\[
\boxed{\text{The correct match is (A) - (IV), (B) - (II), (C) - (III), (D) - (I).}}
\]