Explanation:

The correct answer is option 'B' - 2 only.

Explanation of the options:
1. State governments are suspended, and the Centre takes control of the states.
- This statement is not correct. During a national emergency, the state governments are not suspended. However, the Centre can take certain measures to ensure coordination and effective management of the situation. The state governments continue to function, but their powers may be curtailed or limited during the emergency.

2. Parliament becomes empowered to make laws on any subject mentioned in the State List.
- This statement is correct. During a national emergency, the Parliament is empowered to make laws on any subject mentioned in the State List. The State List is a list of subjects on which the state governments have exclusive jurisdiction to make laws. However, during a national emergency, the Centre can override the state governments' authority and legislate on those subjects.

Explanation of the correct answer:
Option 'B' is the correct answer because only statement 2 is correct. During a national emergency, the Parliament is empowered to make laws on any subject mentioned in the State List. This is done to ensure effective management and coordination of the emergency situation.

During a national emergency, the President can declare a state of emergency under Article 352 of the Indian Constitution. This can be done on the grounds of war, external aggression, or armed rebellion. Once the emergency is declared, the Centre can exercise certain powers to deal with the situation effectively.

One of the powers granted to the Centre during a national emergency is the authority to make laws on any subject mentioned in the State List. The State List includes subjects such as police, public order, health, agriculture, and local government, among others. Normally, these subjects are within the exclusive jurisdiction of the state governments to make laws. However, during a national emergency, the Centre can legislate on these subjects to ensure uniformity and effective measures to tackle the emergency.

It is important to note that the state governments continue to function during a national emergency, but their powers may be limited or curtailed to ensure better coordination and management of the emergency situation. The Centre may issue directives to the state governments, and the state governments are bound to comply with these directives.

Therefore, option 'B' is the correct answer as only statement 2 is correct during a national emergency.