“Less than a generation back the origin of Greek civilization, and with it the sources of all great culture that has ever been, were wrapped in an impenetrable mist. . . . One man had faith, accompanied by works, and in Dr. Schliemann the science of classical antiquity found its Columbus. Armed with the spade, he brought to light from beneath the mounds of the ages a real Troy; at Tiryns and Mycenae he laid bare the palace and the tombs and treasures of Homeric Kings. A new world opened to investigation, and the discoveries of its first explorer were followed up successfully by Dr. Tsountas and others on Greek soil. The eyes of observers were opened, and the traces of this prehistoric civilization began to make their appearance far beyond the limits of Greece itself.” —Sir Arthur Evans, archaeologist,
as quoted in The Discoverers

What does “wrapped in an impenetrable mist” mean?
a.
undiscovered
c.
never dreamed of
b.
foggy
d.
clearly seen

Please select the best answer from the choices provided

A
B
C
D