Read the given passage carefully and answer the following questions.

Bharmaur tribal area comprises Bharmaur and Holi tehsils of Chamba district of Himachal Pradesh. It has been a notified tribal area since 21 November 1975. Bharmaur is inhabited by 'Gaddi', a tribal community who have maintained a distinct identity in the Himalayan region as they practised transhumance and conversed through Gaddiali dialect.

Bharmaur tribal region has harsh climate conditions, a low resource base and a fragile environment. These factors have influenced the society and economy of the region. According to the 2011 census, the total population of Bharmaur subdivision was 39,113 i.e., 21 persons per sq km. It is one of the most (economically and socially) backward areas of Himachal Pradesh. Historically, the Gaddis have experienced geographical and political isolation and socio-economic deprivation. The economy is largely based on agriculture and allied activities such as sheep and goat rearing.

The process of development of the tribal area of Bharmaur started in the 1970s when Gaddis were included among 'scheduled tribes'. Under the Fifth Five-Year Plan, the tribal sub-plan was introduced in 1974 and Bharmaur was designated as one of the five Integrated Tribal Development Projects (ITDP) in Himachal Pradesh. This area development plan was aimed at improving the quality of life of the Gaddis and narrowing the gap in the level of development between Bharmaur and other areas of Himachal Pradesh. This plan laid the highest priority on development of transport and communications, agriculture and allied activities, and social and community services.

The most significant contribution of the tribal sub-plan in the Bharmaur region is the development of infrastructure in terms of schools, healthcare facilities, potable water, roads, communications and electricity. But the villages located along the river Ravi in Holi and Khani areas are the main beneficiaries of infrastructural development. The remote villages in Tundah and Kugti areas still do not have sufficient infrastructure.

Which of the following is NOT the most significant contribution of the tribal sub-plan in Bharmaur region?

Establishment of wind and solar energy plants

The correct answer is Option (1) → Establishment of wind and solar energy plants

The passage clearly states that the most significant contributions of the tribal sub-plan in Bharmaur region include:

• Development of schools

• Development of healthcare facilities

• Provision of potable water

• Development of roads, communications, and electricity

There is no mention of wind and solar energy plants in the passage.