**Core Concept**
Schüffner's dots are a characteristic histopathological feature seen in the erythrocytes of patients infected with Plasmodium vivax and Plasmodium ovale. They are small, dark-blue or purple inclusions that are visible under the microscope. These dots are actually the site of sequestration of the parasite's pigment, hemozoin.

**Why the Correct Answer is Right**
The presence of Schüffner's dots in the erythrocytes of patients infected with Plasmodium vivax and Plasmodium ovale is due to the sequestration of the parasite's pigment, hemozoin. Hemozoin is a breakdown product of hemoglobin that is toxic to the parasite, and it accumulates in the cytoplasm of the infected erythrocyte. The accumulation of hemozoin causes the characteristic dark-blue or purple inclusions known as Schüffner's dots. This sequestration of hemozoin is an adaptive mechanism that helps the parasite to survive within the host's erythrocytes.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Schüffner's dots are not associated with Plasmodium falciparum infection, which is a different species of malaria parasite. While Plasmodium falciparum does produce hemozoin, it does not produce the characteristic Schüffner's dots seen in Plasmodium vivax and Plasmodium ovale infections.

**Option B:** This option is incorrect because Schüffner's dots are not due to the presence of malaria pigment in the erythrocytes. While the malaria pigment is indeed sequestered in the erythrocytes, it is not responsible for the characteristic inclusions known as Schüffner's dots.

**Option C:** This option is incorrect because Schüffner's dots are not a feature of Plasmodium malariae infection. Plasmodium malariae does produce hemozoin, but it does not produce the characteristic Schüffner's dots seen in Plasmodium vivax and Plasmodium ovale infections.

**Clinical Pearl / High-Yield Fact**
Schüffner's dots are a key feature in the diagnosis of malaria due to Plasmodium vivax and Plasmodium ovale. They are often seen in the peripheral blood smears of patients infected with these parasites, and their presence can help to distinguish these infections from other types of malaria.

**Correct Answer: C. Plasmodium malariae does not produce Schüffner's dots.**