Correct Answer: China

Solution : The correct answer is (c) China.

According to the World Bank, as of 2020,71 % of the population in China has access to safely managed sanitation facilities. This is followed by **Pakistan with 39 % and India with 53 %.

It is important to note that these percentages are based on the definition of "safely managed sanitation facilities" as set by the World Health Organization (WHO). China has made significant progress in improving access to sanitation facilities in recent years**. In 1990 , only 31 % of the population had access to safely managed sanitation facilities. However, the government has invested heavily in sanitation infrastructure, and this has led to a significant improvement in access.