In which year was the National Investment and Infrastructure Fund (NIIF) established by the Government of India?

The correct option is 2015.

Explanation:
The National Investment and Infrastructure Fund (NIIF) was established by the Government of India in 2015.

Key details about NIIF:
1. Approval & Registration: The creation of NIIF was approved by the Union Cabinet in July 2015, and it was officially registered with the Securities and Exchange Board of India (SEBI) as a Category II Alternative Investment Fund (AIF) in December 2015.
2. Objective: NIIF acts as India's first sovereign wealth fund, created to maximize economic impact through infrastructure investments in commercially viable projects (both greenfield and brownfield).
3. Focus Areas: It channels capital into critical sectors such as energy, transportation, warehousing, logistics, and digital infrastructure.