a) The use of red sandstone and idealized facial features.
b) The exclusive focus on Jaina Tirthankaras and scenes from the Jatakas.
c) The depiction of the Buddha in human form, using Greco-Roman techniques like realistic drapery.
d) Its flourishing under the Gupta patronage in Central India.
Correct Answer: c) The depiction of the Buddha in human form, using Greco-Roman techniques like realistic drapery.
Explanation: The Gandhara School (flourished under the Kushanas in the Northwest) is famed for using Greek and Roman sculptural techniques. The Buddha figures here resemble Greek gods (like Apollo) and feature realistic anatomy, wavy hair, and distinctive, heavy, voluminous drapery in the Greco-Roman style. Contrast this with the Mathura School, which used red sandstone and indigenous Indian styles.