Answer:
A
Explanation:
linguistically were related to the Khoi, distinguished by the use of "clicking" sounds.
The San and khoi were linguistically related and they were classified as Khoisan. It was spoken mainly in South Africa. The language was spread throughout East and South Africa thousands of years ago. They are known for their use of click sounds or consonants.
The languages khoisan are now obsolete and were classified by Joseph Greenberg.