Step 1: Green hydrogen projects are being promoted by Indian states to support clean and sustainable energy goals.
Step 2: Rajasthan, due to its vast land availability and high renewable energy potential, has emerged as a key state for green hydrogen initiatives.
Step 3: Rajasthan signed a Memorandum of Understanding (MoU) with Jack Green to develop a green hydrogen project.
Step 4: Therefore, the correct answer is Rajasthan.