On the national basis, which cancer type is most common in India?

Explanation

**Step-by-Step Solution:**

1. **Understanding Cancer**: Cancer is characterized by uncontrolled and unregulated cell growth, leading to the formation of tumors. These tumors can be benign (non-cancerous) or malignant (cancerous) and can spread to other parts of the body.

2. **Identifying Common Cancer Types**: The question specifically asks for the most common types of cancer in India, differentiated by gender.

3. **Common Cancer in Males**: According to statistics, the most prevalent type of cancer among males in India is mouth cancer. This is often linked to risk factors such as tobacco use and poor oral hygiene.

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