Step 1: Understanding the Concept:
This requires matching historical policies with the correct Governor-General or Viceroy.
Step 2: Detailed Explanation:
- Option (A): Doctrine of Lapse was introduced by Lord Dalhousie.
- Option (B): Subsidiary Alliance was refined and extensively used by Lord Wellesley to bring Indian rulers under British control. This is the correct pair.
- Option (C): The Arms Act (1878) was passed by Lord Lytton.
- Option (D): The Vernacular Press Act (1878) was also passed by Lord Lytton.
Step 3: Final Answer:
The only correctly matched pair is (B).
Hence, the correct option is (B).