For the 10th-century Shiva sculpture, an artist shows one of the Indian god’s arms in a(n), or spiritual gesture.

trident  

Explanation:

Shiva is known as "The Destroyer" within the Trimurti, the Hindu trinity that includes Brahma and Vishnu. In Shaivism tradition, Shiva is one of the supreme beings who creates, protects and transforms the universe.

In the Shaktism tradition, the Goddess, or Devi, is described as one of the supreme, yet Shiva is revered along with Vishnu and Brahma. A goddess is stated to be the energy and creative power  of each, with Parvati the equal complementary partner of Shiva.[