Answer:
Hi!
The correct answer is c).
the perpendicular to parallels theorem proves that two lines are perpendicular.
Step-by-step explanation:
The perpendicular to parallels or perpendicular transversal theorem states that if in the same plane there are two parallel lines, and there is a line perpendicular to one of them, it means that it is also perpendicular to the other one.
See the attachment.
