The correct answer is option B, CSO.

CSO stands for Central Statistics Office. It is responsible for collecting and presenting statistics in India. It is a part of the Ministry of Statistics and Programme Implementation. The CSO was set up in 1951 and has its headquarters in New Delhi.

Functions of CSO:
1. Collection and compilation of statistical data: The CSO collects and compiles data on various aspects of the Indian economy such as agriculture, industry, trade, health, education, etc.
2. Analysis and publication of data: After collecting and compiling data, the CSO analyses and publishes the data in various reports and publications such as the National Accounts Statistics, Economic Survey, etc.
3. Coordination of statistical activities: The CSO coordinates the statistical activities of various government departments and agencies to ensure that the data collected is consistent and reliable.
4. Development of statistical methods: The CSO develops statistical methods and techniques to improve the quality of data collected and to make it more relevant to policy makers.

Other organizations involved in collecting and presenting statistics in India:
1. National Sample Survey Office (NSSO): It is responsible for conducting large-scale sample surveys in various areas such as employment, consumer expenditure, etc.
2. National Statistical Commission (NSC): It is an advisory body that provides guidance on statistical matters to the government.
3. Indian Statistical Institute (ISI): It is a premier institute for research and teaching in statistics and related subjects.

In conclusion, the CSO is the primary organization responsible for collecting and presenting statistics in India. It plays a crucial role in providing accurate and reliable statistical data that is used by policy makers and researchers to make informed decisions.