题目选项分析

An economist, professor, and policy advocate born in New Delhi, India, Raj Chetty has been given access to some of the largest datasets ever made available for research purposes by governments and also private entities, but Chetty has been careful to address privacy concerns by anonymizing all the information used in his analyses.

An economist, professor, and policy advocate born in New Delhi, India, Raj Chetty has been given access to some of the largest datasets ever made available for research purposes by governments and also private entities, but Chetty has been careful to address privacy concerns by anonymizing all the information used in his analyses.