On which of the following special occasions do Rajasthani women especially…

In Rajasthan, particular tie-and-dye textile patterns are traditionally associated with specific festivals and seasons rather than being worn interchangeably. Lahariya is a diagonal wave-patterned tie-dye technique whose flowing stripes are meant to evoke monsoon clouds and rainfall, so its use is tied to the monsoon festival cycle.

Applying this here: the monsoon festival cycle in Rajasthan centres on Teej (particularly Hariyali/Sawan Teej), when women traditionally wear green, lahariya-pattern odhnis and sarees, apply mehndi, and swing on decorated jhulas while singing monsoon folk songs to mark the arrival of the rains. The official RSSB Patwar 2025 (Shift 2) answer key confirms Teej as the occasion referred to in this question.

• Birth of a child: marked with naming ceremonies and congratulatory folk songs (sohar), not with a designated lahariya-pattern garment.

• Holi: centred on throwing colours (gulal) and the Holika Dahan bonfire the night before, customs unrelated to the lahariya pattern/technique.

• Akshaya Tritiya: an auspicious day for weddings and buying gold, with no customary link to the lahariya odhni.

Hence, the wave-patterned lahariya odhni is the garment specifically worn during Teej.