Which of the following text is referred as ‘Vedanta’?

Upanishads

The correct answer is Option 3- Upanishads

The Upanishads are referred to as Vedanta.

The word Vedanta literally means the end of the Vedas and originally referred to the Upanishads. Vedanta is concerned with the jñānakāṇḍa or knowledge section of the vedas which is called the Upanishads. The meaning of Vedanta expanded later to encompass the different philosophical traditions that are based on the Prasthanatrayi.