Explanation:

"It is released by the International Monetary Fund (IMF)": This statement is not correct. The Global Competitiveness Index (GCI) is not released by the International Monetary Fund (IMF). It is released by the World Economic Forum (WEF).

"India’s rank has improved 16 places for the second year in a row after a moderate rise in the year 2014-15": This statement is not correct. 

"This year, the report highlights that declining openness is threatening growth and prosperity all over the world": This statement is correct. The Global Competitiveness Report often includes insights on various aspects of the global economy, and if it highlights that declining openness is threatening growth and prosperity, it would be a part of the report's analysis.