The Jain sect whose monks traditionally remain 'sky-clad' (without clothes) is called:

"Digambara" means "sky-clad" (from "dig", direction or sky, and "ambara", garment), and its monks traditionally remain without clothes.

The two main sects of Jainism:

• "Digambara" (sky-clad): monks give up all possessions, including clothes, as a sign of complete renunciation.
• "Shvetambara" (white-clad): monks and nuns wear simple white clothes.

How the split happened:

• According to tradition, in the 3rd century BCE, a severe famine struck Magadha.
• A group of Jain monks migrated to the south (to Karnataka), while another group stayed in Magadha under Sthulabhadra.
• The monks who stayed in the north began to wear white clothes and compiled the scriptures at a council in Pataliputra.
• When the southern group returned, they disagreed with these changes.
• Over time, these differences led to the formation of two sects, and the split became final around the 1st century CE.

Main differences between the sects:

• Clothing: Digambara monks remain naked; Shvetambara monks wear white clothes.
• Liberation of women: Digambaras believe that women cannot attain liberation in their present birth and must first be reborn as men; Shvetambaras believe that women can attain liberation.
• The 19th Tirthankara, Mallinatha, is believed by Shvetambaras to have been a woman; Digambaras believe he was a man.
• Scriptures: Digambaras believe that the original scriptures (the "Purvas" and the "Angas") were lost; Shvetambaras accept the canon compiled later.
• Mahavira's marriage: Shvetambaras believe Mahavira married; Digambaras believe he did not.
• Digambaras believe that a person who has attained perfect knowledge does not need food.

Sub-sects:

• Shvetambara sub-sects include the Murtipujaka, Sthanakvasi and Terapanthi.
• Digambara sub-sects include the Bispanthi and Terapanthi (Digambara).

Why not the other options?

• ✗Shvetambara monks wear white clothes.
• ✗Sthanakvasi and Terapanthi are sub-sects of the Shvetambaras.