Question

The Buddha spoke Pali.
A. he never spoke anything else
B. yes
C. it is not certain
D. no

Answer 1

Yes but The Buddha did not preach in Pali. He preached mainly in Old Magadhi, the language of Maghada, where he spent much of his time.

Answer 2

yes in times of Buddha The Buddha spoke to pali..

They preaches especially to the old magadhi