The correct answer is (b), Corona.
Eris is a new variant of the coronavirus disease 2019 (COVID-19). It was first identified in the United Kingdom in December 2021. Eris is more transmissible than previous variants of COVID-19, but it does not appear to be more severe.
Ebola is a viral hemorrhagic fever that is caused by the Ebola virus. It is a very serious disease with a high mortality rate. Ebola is spread through contact with the blood or body fluids of an infected person or animal.
Kala azar is a parasitic disease that is caused by the Leishmania parasite. It is spread through the bite of infected sandflies. Kala azar can cause fever, weight loss, anemia, and enlargement of the spleen and liver.
Malaria is a mosquito-borne disease that is caused by Plasmodium parasites. It is a major public health problem in many parts of the world. Malaria can cause fever, chills, anemia, and death.
Ebola, Kala azar, and Malaria are all serious diseases, but they are not related to Eris. Eris is a new variant of COVID-19, which is a respiratory illness.