The primary responsibility for conducting the Census in Himachal Pradesh lies with the:

State government
Directorate of Census Operations
Panchayat Raj Institutions
Local NGOs

The correct answer is: State government.

The Directorate of Census Operations is a subordinate office of the State government. It is responsible for conducting the Census in Himachal Pradesh. The Panchayat Raj Institutions are local self-government institutions in Himachal Pradesh. They are responsible for providing basic services to the people at the local level. Local NGOs are non-governmental organizations working in Himachal Pradesh. They are involved in a variety of activities, including social welfare, education, and health.

The State government is responsible for conducting the Census in Himachal Pradesh because it is the only body that has the authority to do so. The Constitution of India gives the State government the power to conduct the Census. The Directorate of Census Operations is a subordinate office of the State government and is responsible for carrying out the instructions of the State government. The Panchayat Raj Institutions are local self-government institutions in Himachal Pradesh. They are responsible for providing basic services to the people at the local level. However, they do not have the authority to conduct the Census. Local NGOs are non-governmental organizations working in Himachal Pradesh. They are involved in a variety of activities, including social welfare, education, and health. However, they do not have the authority to conduct the Census.