The correct answer is (a). Kori Creek lies in the Gulf of Kutch.
The Gulf of Kutch is a large, shallow bay on the west coast of India, in the state of Gujarat. It is bounded by the Kathiawar Peninsula to the north and the Kutch Peninsula to the south. The Gulf of Kutch is connected to the Arabian Sea by the Kori Creek, which is a narrow strait that separates the Kutch Peninsula from the Kathiawar Peninsula.
The Gulf of Kutch is a major fishing ground and is also home to a number of important ports, including Kandla and Mundra. The Gulf of Kutch is also a popular tourist destination, with a number of beaches and resorts.
The other options are incorrect. The Gulf of Khambhat is located to the south of the Gulf of Kutch. The Little Rann of Kutch is a salt marsh located to the north of the Gulf of Kutch. The Rann of Kutch is a large salt marsh located to the north of the Little Rann of Kutch.