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In World War II, the 23rd Headquarters Special Troops became known as the
Ghost ______ models, optical illusions, and other trickery to deceive and
intimidate the opposing forces.
Which choice completes the text so that it conforms to the conventions of
Standard English?
A) Army; using
B) Army, they used
C) Army: they used
D) Army; and they used

In World War II the 23rd Headquarters Special Troops became known as the Ghost models optical illusions and other trickery to deceive and intimidate the opposin class=