Which of the following could replace ‘casts’ as used in the passage?

Directions: Read the following passage carefully and select the most suitable option according to the corresponding number in the passage.

When the moon in its juornie (1) around the earth, passes directly between the earth and the sun, it casts (2) its shadow on the surface of the earth, and an eclipse of the sun takes place. An eclipse of the sun occurs only when the moon is new, for then (3) the moon is on that side of the earth facing toward (4) the sun. Then why isn’t there are eclipse of the sun every time there’s a new moon? The reason (5) is that the path of the moon around the earth does not lie directly (6) in line with the orbit of the earth about the sun. In its 29–day trip around (7) the earth, the moon passes sometimes above and sometimes below the path (8) of the earth.