Explanation:

- In 2021, the Supreme Court addressed the case of dowry death in the Satbir Singh vs State of Haryana case.

- Correct Answer: Option 2 - State of Haryana

Here's a brief overview:

- Guidelines Laid Down: The court set clear guidelines for the prompt and fair trials of dowry deaths.

- Importance: These guidelines are crucial as they aim to ensure justice for victims and help curb the menace of dowry deaths.

- Relevance of Haryana: The case highlights issues prevalent in states like Haryana, which often report a significant number of dowry-related cases.

The other options like Rajasthan, Punjab, and Uttar Pradesh aren't relevant to this specific legal case. Each state, however, faces similar issues concerning dowry practices.