With reference to Indian history, who among the following is a future Buddha, yet to come to save the world?

1. The question asks to identify the figure in Buddhist tradition who is considered the future Buddha, yet to come. 2. Avalokiteshvara (A) is a prominent Bodhisattva who embodies compassion. Padmapani (D) ('Lotus-bearer') is one of the common forms or epithets of Avalokiteshvara. Lokesvara (B) ('Lord of the World') is also often used as an epithet for Avalokiteshvara. 3. Maitreya (C) is recognized across various schools of Buddhism as the future Buddha. According to tradition, Maitreya is currently a Bodhisattva residing in the Tushita heaven, who will appear on Earth in the distant future, achieve complete enlightenment, and teach the pure dharma, succeeding the historical Gautama Buddha.