Which of the following statements best describes two parallel lines?

They intersect at exactly one point.

They are always the same distance apart.

They form a right angle where they meet.

They must have the same length.

Imagine the horizontal strings on a guitar. Which property makes these strings a good real-world example of parallel lines?

They are all attached to the guitar.

They each make a different musical note.

They run alongside each other and never cross.

They are all made of the same material.

The top edge and the left side edge.

The left side edge and the right side edge.

The bottom edge and the right side edge.

A diagonal line and the top edge.