Explanation:

The correct answer is option B, which states that the Indian constitution features a rigid constitution and a bicameral legislature. Let's break down each of these features:

Rigid Constitution:
- A rigid constitution is one that can only be amended through a special procedure, which is different from the ordinary legislative process.
- The Indian constitution is rigid because it requires a special majority of the parliament (two-thirds majority in both houses) and ratification by at least half of the state legislatures for any amendment to be made.
- This ensures that the constitution is not easily changed and provides stability to the fundamental principles and provisions of the constitution.

Bicameral Legislature:
- A bicameral legislature consists of two separate chambers or houses, where legislation is debated, amended, and passed into law.
- The Indian parliament is a bicameral legislature, consisting of the Rajya Sabha (Council of States) and the Lok Sabha (House of the People).
- The Rajya Sabha represents the states of India and is indirectly elected by the members of the state legislative assemblies.
- The Lok Sabha represents the people of India and is directly elected by the citizens through a general election.
- Both houses play a crucial role in the lawmaking process and provide a system of checks and balances.

Appointment of Governor:
- The appointment of the Governor is not a federal feature of the Indian constitution.
- The Governor is the constitutional head of each state in India and is appointed by the President of India.
- The Governor represents the President and acts as the executive head of the state government.
- However, the Governor's role is not related to the federal structure of the constitution but rather to the executive powers and functioning of the state government.

Integrated Judiciary:
- The integrated judiciary is not a federal feature of the Indian constitution.
- The Indian judiciary is a hierarchical system with a Supreme Court at the top, followed by High Courts in each state, and subordinate courts at the district and lower levels.
- The judiciary plays a crucial role in interpreting the constitution, resolving disputes, and protecting the rights and freedoms of individuals.
- However, the judiciary's structure and functioning are not directly related to the federal nature of the constitution.

In conclusion, the correct answer is option B, as the Indian constitution features a rigid constitution and a bicameral legislature. The appointment of the Governor and the integrated judiciary are not federal features of the constitution.