The Constitution begins with the Preamble, which states the basic mission and goal of the document, and then goes on to describe the different aspects of the government in varies articles. And since the Founding Fathers wanted the Constitution to be able to "adapt" to new times, they allowed for amendments to be made to it.
Answer:
B. You must keep practicing the piano, until you get it right
Explanation:
"you must keep practicing the piano" is a main clause while " until you get it right is an adverbial clause of time, the comma btwn them shows a demarcation or tells us which is the main and which is the adverbial
