Step 1: Understand the consumer dispute resolution system.
The consumer dispute resolution system in India is structured in a three-tier system: the District Forum, State Commission, and National Commission. This allows for a hierarchical approach to resolving consumer complaints.
Step 2: Evaluate the options.
- The three-tier system ensures that cases can be escalated to higher forums depending on the amount of the claim.
Step 3: Conclude.
The correct answer is that the consumer dispute resolution system is a three-tier structure.
Final Answer:
\[
\boxed{\text{Three-tier}}
\]