The sentence featuring a restrictive clause is A. They chose to meet where the band was performing.
A restrictive clause, also referred to as an essential clause, is crucial for the meaning of the sentence and is therefore not separated by commas.
Thomas Jefferson was simply informing the king of England that colonial America was no longer under British control.
The accurate answer is D) When the enslaved Africans began to communicate—both verbally and through actions—Europeans began to recognize them as human, signaling that the Age of Sugar transitioned into the Age of Freedom. The author aims to clarify the involvement of Africans in sugar production and how their contributions played a crucial role in the globalization that developed, often at the cost of their freedom, leading to the most fitting phrase being D).