Explanation: The river Ganga, also known as the Ganges, is one of the most important and sacred rivers in India. It is a major river system that flows through the northern part of the Indian subcontinent. The Ganga originates from the Gangotri Glacier, which is located in the Uttarkashi district of Uttarakhand. The Gangotri Glacier is situated in the Garhwal Himalayas, and it is the source of the Bhagirathi River, which later merges with the Alaknanda River to form the Ganga at Devprayag.
Uttarakhand, formerly known as Uttaranchal, is a state in the northern part of India. It is a part of the Himalayan region and is known for its natural beauty, including the Gangotri Glacier. The state is also home to several other important rivers, such as the Yamuna and the Kosi, which are tributaries of the Ganga.
The Ganga river system is crucial for the cultural, religious, and economic life of millions of people in India. It is considered sacred in Hinduism, and its waters are used for various religious rituals and ceremonies. The river also supports agriculture, industry, and transportation in the regions it flows through.
It is important to note that while the Ganga originates in Uttarakhand, it flows through several other states, including Uttar Pradesh, Bihar, Jharkhand, and West Bengal, before finally emptying into the Bay of Bengal. The river's course and the states it passes through are significant for understanding the geography and hydrology of northern India.
In summary, the correct answer is Uttarakhand because the Ganga originates from the Gangotri Glacier in this state. This fact is crucial for understanding the geography and the cultural significance of the Ganga river system in India.