Explanation:

Only statements 1&3 are correct.

• India has a single integrated judicial system with a hierarchical structure, consisting of the Supreme Court at the top, followed by High Courts at the state level, and subordinate courts (including district courts) at the lower levels. The government is involved in a significant portion of pending litigation in India. 

• Statement 2 is incorrect: While civil cases are part of the backlog, criminal cases constitute a larger portion of the pending cases in subordinate courts. As of recent data, there are approximately 3.06 crore criminal cases pending compared to 1.08 crore civil cases in these courts. 

Hence option 2nd is correct.