A within-subjects design:. A. Controls extraneous variables better than random assignment in a between-subjects design.
B. Is less vulnerable to carryover effects than a between-subjects design.
C. Requires less time to run subjects than a between-subjects design.
D. Requires more subjects than a between-subjects design.

liverpool, trent alexander arnold

explanation:

swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.