Where was the first major public appearance of Gandhi after his return from South Africa in India in which he charged Indian elite of neglecting the labouring poor?

Correct option is C

The first major public appearance and speech where Gandhi charged the Indian elite with neglecting the labouring poor was at (c) The opening ceremony of the B.H.U. in February 1916 (Banaras Hindu University).

During his speech, delivered in English to a largely elite audience of princes, barristers, and academics, Gandhi criticized the opulence of the ceremony and the contrast with the poverty of the common people. He specifically mentioned the absence of laborers in the audience and the focus on English as the medium of instruction, which alienated the masses.

The first major public appearance of Gandhi after his return from South Africa, in which he charged the Indian elite with neglecting the labouring poor, was at (c) The opening ceremony of the B.H.U. in February 1916.
During his speech at the Banaras Hindu University (BHU) inauguration, in the presence of many dignitaries and even the Viceroy, Gandhi criticized the elaborate, "gorgeous show" and the disconnect between the richly dressed elite present and the millions of poor Indians who were not represented in such gatherings. This speech was a statement of intent to make the Indian nationalist movement more representative of the masses.