With reference to the river Luni, which one of the following statements is correct ?

The Luni River rises in the Aravalli near Ajmer, receives seasonal tributaries, becomes brackish below Balotra and then ‘loses itself’ southwestwards into the Rann of Kutch, indicating it is dissipated in inland marshes rather than reaching the sea or flowing to Pakistan [1]. Regional descriptions state the river flows southwest to join the Rann of Kachchh (Rann of Kutch) rather than any gulf or Indus tributary [2]. Scientific and geographic assessments characterize Luni as an internal-drainage river that is drained/absorbed before reaching the Arabian Sea, i.e., it is lost in the marshy Rann of Kutch. Hence option (4) is correct.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 3: The Drainage System of India > Luni River > p. 19
2. [2] INDIA PHYSICAL ENVIRONMENT, Geography Class XI (NCERT 2025 ed.) > Chapter 3: Drainage System > River Systems of the Peninsular Drainage > p. 24