To answer this question, you need to understand the effects of malaria on the human body. Let's go through each option to understand why it is correct or incorrect:
Option A) Heart - This option is incorrect because malaria primarily affects the red blood cells and liver, but it does not directly target the heart.
Option B) Lungs - This option is incorrect because malaria does not directly affect the lungs. It primarily affects the red blood cells and liver.
Option C) Spleen - This option is correct because malaria can lead to enlargement of the spleen. The malaria parasite infects and multiplies within red blood cells, which can cause the spleen to become enlarged as it filters out these infected red blood cells.
Option D) Kidneys - This option is incorrect because malaria does not directly affect the kidneys. It primarily affects the red blood cells and liver.
The correct answer is C) Spleen. This option is correct because malaria can lead to enlargement of the spleen due to the presence of the malaria parasite in the red blood cells.
Therefore, the correct answer is C) Spleen.