Concept:The main symbol that represents Ghana's sovereignty and independence is the national flag.Explanation:The National Flag of Ghana is the foremost symbol of the country’s independence and identity as a sovereign state.It is flown nationally and internationally to represent Ghana.Other symbols like the Speaker's Mace, State Sword, and Coat-of-arms are important but are not the primary symbol of independent statehood.Answer:The correct option is B. National Flag.