The correct answer is A) Charles I is executed.
One result of the English Civil War was that Charles I is executed.
The English Civil War started in 1642 and ended in 1651. It was the armed confrontation between the Royalists and Parliamentarians.
The consequences of the war were the trail and execution of Charles I. His son, Charles II, went to exile. And the installation of the Commonwealth of England as the form of government after deposing the King. Later, it became the Protectorate. From now on, the King knew that he had no absolute power and the British Parliament had to approve all the decisions.
C. Bantu
Bantu-speaking peoples migrated from Western Africa (in the area of modern Nigeria) throughout southern parts of Africa starting around 1000 BC and continuing to the 1500s (or perhaps a bit later, by some accounts).
There is some debate among historians as to whether iron metallurgy arose independently in Africa or was learned or borrowed from the Middle East or Europe. But whether independently invented or borrowed, the fact remains the the spread of iron working in Africa and the spread of Bantu languages by Bantu migration across Africa were correlated events.