|Question 17Verbal

Source Texts

Text
As cheesemaking practices spread throughout Europe and Asia during and after the Neolithic, divergent strategies for preserving milk        whereas rennet-coagulated cheesemaking became key to milk preservation in Europe and Southwest Asia, acid-heat coagulation methods became common among nomadic herding populations of the northeastern Eurasian steppe.
Which choice completes the text so that it conforms to the conventions of Standard English?
emerged and
A
emerged
B
emerged:
C
emerged.
D