Read the excerpt from The Building of Manhattan.The BOOM is usually 70 to 90 feet long and is hinged to the mast at its base, so that both move together when the derrick swings to a new direction.
Answer
A
It would help the reader pronounce words describing complex parts in the text.
B
It would help the reader visualize the complex parts described in the text.
C
It would help the reader assemble the complex parts described in the text.
D
It would help the reader operate the complex parts described in the text.