Step 1: Read the constitutional title.
Rajya Sabha is the {Council of States}. Members are elected by the elected members of State/UT legislatures using proportional representation with the single transferable vote (Art. 80, RPA 1951).
Step 2: Function within federalism.
It safeguards federal balance by giving states a voice in national legislation and special powers (e.g., Art. 249 allowing Parliament to legislate on State List subjects upon Rajya Sabha resolution).
Step 3: Distinguish from Lok Sabha.
Lok Sabha is the House of the People (directly elected citizens); therefore option (A) is incorrect in the specific representational sense asked.
Step 4: Conclude.
\[
\boxed{\text{Rajya Sabha represents the States (Option B).}}
\]