What is the significance of Siddhartha Gautama to Buddhism?

Question

A.
An important Hindu, he taught that self-denial is the best spiritual path. **

B.
An important Indian king, he supported the spread of Buddhism.

C.
Known as a missionary, he spread Buddhism to Japan and Korea.

D.
Known as the Buddha, his teachings provided the basis of Buddhism.

Answer 1

Nope.

Answer 2

so wht is it

Answer 3

i think its D