Why is it likely that the Shona had different cultural influences
Answers
"Great Zimbabwe attracted traders from around the world" is the right answer.
The Shona state came under the most powerful kingdoms of the South Africa with its political and religious centres in Great Zimbabwe. And the people of the Shona state were the native of Zimbabwe. They formed an extensive trading network around the world (as far as China) As a result this state got influence from many cultures around the world.
It is likely that the Shona had different cultural influences because A) Great Zimbabwe attracted traders from around the world.
It has been seen and found that Zimbabwe had a huge trading scenario and traders from as far as China used to trade with Zimbabwe.
As a result many cultures used to get mixed in Zimbabwe and other people used to get influenced.