To answer this question, we need to have knowledge about the Indian independence movement and the timeline of events leading up to India's independence from British rule.

The correct answer is C. 26 Jan 1930.

Explanation:

The Indian National Congress, under the leadership of Mahatma Gandhi, declared the "Declaration of Indian Independence" (Poorna Swaraj) on 26 Jan 1930. This declaration marked a significant step towards India's independence and the demand for complete self-rule.

Let's review the options:

A. 26 Jan 1931: This is not the correct answer. The Declaration of Indian Independence was promulgated a year earlier, in 1930.

B. 26 Jan 1932: This is not the correct answer. The Declaration of Indian Independence was not promulgated in 1932.

C. 26 Jan 1930: This is the correct answer. The Indian National Congress issued the Declaration of Indian Independence on this date.

D. 26 Jan 1933: This is not the correct answer. The Declaration of Indian Independence was not promulgated in 1933.

所以，用户的核心观点是：Declaration of Indian Independence(poorna Swaraj) was promulgated by Indian National Congress on 26 Jan 1930.