Aruna Asaf Ali was indeed a major woman organizer of underground activity during the Quit India Movement.

Explanation:
The Quit India Movement was a significant freedom struggle launched by the Indian National Congress under the leadership of Mahatma Gandhi in August 1942. The movement aimed at achieving complete independence from British rule and garnered widespread support from the Indian masses.

1. Aruna Asaf Ali's involvement in the Quit India Movement:
Aruna Asaf Ali played a crucial role in organizing underground activities during the Quit India Movement. She was an active member of the Indian National Congress and had been associated with the freedom struggle for a long time. Aruna Asaf Ali was among the prominent leaders who defied the British government's orders and actively participated in the movement.

2. Underground activities:
During the Quit India Movement, the Indian National Congress adopted a strategy of non-violent mass civil disobedience. However, as the British government cracked down on the movement, many leaders, including Aruna Asaf Ali, had to resort to underground activities to continue the resistance. Underground activities involved organizing secret meetings, spreading nationalist propaganda, coordinating acts of civil disobedience, and evading arrest.

3. Aruna Asaf Ali's leadership:
Aruna Asaf Ali's leadership skills and dedication to the cause made her a prominent figure in the Quit India Movement. She not only organized underground activities but also inspired and mobilized other women to actively participate in the movement. She played a crucial role in galvanizing the masses and spreading the message of freedom and non-violence.

4. Symbolic role in the Quit India Movement:
Aruna Asaf Ali's most iconic moment came during the Quit India Movement when she hoisted the Congress flag at the Gowalia Tank Maidan in Bombay (now Mumbai) on August 9, 1942. This act of defiance against the British government became a symbol of resistance and inspired countless Indians to join the movement.

In conclusion, Aruna Asaf Ali's major participation in underground activities and her symbolic role in the Quit India Movement make option 'C' - Quit India Movement - the correct answer.