Statements (A), (B), (D), and (E) explore into the theme of how speech and the freedom to communicate were integral aspects of the lives of slaves. They underscore the central role this element played in the institution of slavery, highlighting that "slaves could never be completely muted."
In contrast, Statement (C) diverges onto a tangential path by discussing the potency of "oaths, orations, and invocations" in relation to the slaves' origins, delving into "...a connection to the all-powerful spirit world..." which seems out of place within the context. Therefore, Statement (3) stands out as the anomaly in this discussion.
So, the correct option is (C): Slaves came from societies in which oaths, orations, and invocations carried great potency, both between people and as a connection to the all-powerful spirit world.