Final answer:
Freedom of speech as we understand it today did not exist as a formal right in African states in 1450; it varied greatly as African societies had different political and social structures, with some potentially allowing a degree of free expression.
Step-by-step explanation:
The concept of freedom of speech as a formal, legal right was not articulated in 1450, especially in the context of different African states where the state of freedoms and rights varied greatly due to tremendous diversity in political and social structures. However, depending on the kingdom or community, some societies may have had traditions that allowed a degree of free expression. Answering the student's question, the closest option would be (c) Freedom of speech varied across African states, recognizing that formal, widespread concepts of freedom of speech as understood today were not present in that era. It is important to consider historical contexts and avoid applying modern conceptions of rights anachronistically to the past.