The correct answer is option 1, Rajasthan. Guru Shikhar peak is located in the state of Rajasthan. This peak is the highest point in the Aravalli Range and is situated near the famous hill station of Mount Abu. It offers stunning panoramic views of the surrounding landscape and is a popular tourist destination. The peak is also home to the Dattatreya Temple, dedicated to Lord Dattatreya, and attracts both religious pilgrims and nature enthusiasts. It is important to note that while Gujarat, Madhya Pradesh, and Maharashtra all have their own beautiful peaks and natural attractions, Guru Shikhar peak specifically belongs to Rajasthan.