(C) Concurrent List
'Education' is a subject in the Concurrent List, on which both the Union Government and State Governments can make laws.
Source: What makes India a federal country?, Chapter 2
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The passage explicitly lists Education under the Concurrent List along with forest, trade unions, marriage, etc. A common mistake is choosing the State List — remember, Education was moved to the Concurrent List by the 42nd Constitutional Amendment (1976). Examiners expect the correct option and, for 1 mark, a brief supporting line is sufficient.