Cadmium pollution is closely linked to Itai-itai disease. Itai-itai is a severe and debilitating condition caused by the ingestion of cadmium-contaminated water or food.
Minamata disease is caused by mercury poisoning, not cadmium pollution, making option 1 incorrect.
Black foot disease is a condition that affects plants, particularly grapevines, due to excessive moisture in the soil. It is not associated with cadmium pollution, so option 2 is incorrect.
Dyslexia is a learning disorder characterized by difficulties in reading and interpreting words, and it is not related to cadmium pollution. Option 3 is therefore incorrect.
Therefore, among the given options, option 4 - Itai-itai disease, is the correct association with cadmium pollution.