17. The imaginary line that both teams use to line up to start a play is called?
a. Line of scrimmage I
b. Mason Dixon line
C. Goal line
d. None of the above

line of scrimmage

Explanation:

In gridiron football, a line of scrimmage is an imaginary transverse line that runs from sideline to sideline (across the width of the football field). It is where you place or put the ball at the end of each play.

If the offense or defense cross the line of scrimmage (LOS) before the ball is snapped or hiked it is offside.

auricle

explanation:

the flaps on the front of the atria are called the auricle.

answer:

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