According to Charaka, Vamana Karma (induced vomiting) is contraindicated in individuals with Samvruta Koshta (a condition characterized by constipation). The reasoning provided, "It may lead to Maranam" (death), is valid because performing Vamana Karma in such cases can lead to complications, including possible fatal outcomes. Therefore, both the assertion and reason are correct, and the reason correctly explains the assertion.
Thus, the correct answer is (1).