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
The most compelling evidence that the Sphinx<span> was </span>built<span> for the Egyptian Pharaoh Khafre during his reign (2520-2494 BC) is in the architecture, geology, and archaeology of the </span>Sphinx<span> and its related monuments.</span>
<span>Lend-Lease provided the soviets with 400,000 jeeps, 12,000 armoured vehicles, 11,400 aircraft and 1.75 million tons of food</span>
