The Census Act mandates:

The correct answer is d) All of the above.

The Census Act is a law that requires all citizens to participate in the census. The data collected by the census is confidential and is only used for statistical purposes. The census is important because it helps the government to understand the population and to make decisions about how to allocate resources.

Here is a brief explanation of each option:

• Compulsory participation by citizens: The Census Act requires all citizens to participate in the census. This means that everyone must answer the questions on the census form. If you do not participate in the census, you may be fined.
• Confidentiality of data: The data collected by the census is confidential. This means that the data cannot be used to identify individuals. The data is only used for statistical purposes.
• Use of data for statistical purposes only: The data collected by the census is only used for statistical purposes. This means that the data is used to understand the population and to make decisions about how to allocate resources. The data is not used for any other purpose, such as marketing or advertising.

The Census Act is an important law that helps the government to understand the population and to make decisions about how to allocate resources. The data collected by the census is confidential and is only used for statistical purposes.