Which of the following is considered a cardio toxin?

Carbon disulfide is recognized as a cardiotoxin due to its potential to induce cardiovascular effects, particularly affecting the heart and vascular system. Research has shown that exposure to carbon disulfide can lead to alterations in heart rate, blood pressure, and overall cardiovascular function. Prolonged exposure may result in more serious health implications, such as an increased risk of cardiovascular diseases.

The other substances listed, while they may pose various health risks, do not primarily fit the definition of a cardiotoxin. Lead, for example, is primarily known for its neurotoxic effects and impact on the hematological system. Manganese can cause neurological issues, especially with chronic exposure. Formaldehyde is mainly considered an irritant and a potential carcinogen, with its risks associated predominantly with respiratory effects rather than direct cardiovascular toxicity. Thus, carbon disulfide stands out specifically for its harmful effects on the cardiovascular system.