The correct answer is option 3, which states that both 1 and 2 are contrary to the norms of a federal polity.

Let`s dissect each option to understand why it is contrary to the norms of a federal polity:

1. Common All India Service: In a federal polity, power and authority are divided between the central government and the state governments. Each level of government has its own administrative services to carry out its functions. However, a common All India Service implies a uniform administrative service for both the central and state governments. This goes against the principle of decentralization and undermines the autonomy of the state governments, which is a characteristic of federalism.

2. Single integrated judiciary: A federal polity typically has separate judicial systems for the central and state governments. This ensures that both levels of government have their own courts and can exercise independent judicial powers. A single integrated judiciary, on the other hand, implies a centralized judicial system where the central government has control over the appointment and functioning of judges. This compromises the autonomy and independence of the state judiciary, which is a key aspect of federalism.

Therefore, option 3 is the correct answer as both the common All India Service and the single integrated judiciary go against the norms of a federal polity.