Which of the following are the Administrative/Revenue units of Jammu and Kashmir (as of May 2019) ?

The correct choice is: “Jammu, Kashmir, Ladakh”

On 8 February 2019 the Jammu and Kashmir administration created Ladakh as a separate administrative and revenue division (earlier it was part of the Kashmir division). The State then had three divisions: Jammu, Kashmir and Ladakh.

Leh and Kargil are the two districts that make up the Ladakh division, not divisions of their own. (Later, in August 2019, the State was reorganised into the Union Territories of Jammu and Kashmir and of Ladakh.)