Ruby's grandfather has a scar in the middle of his chest. She asks him what happened, and he explains that his heart stopped beating
because the blood got stuck and couldn't flow through one part. The
doctor opened him up and put in a new part that would let the blood
flow right and keep his heart beating. He shows Ruby a scar on his leg
where the doctor took the new part to use in his heart. What
procedure did Ruby's grandfather MOST likely undergo?
O CABG
O stent insertion
O heart transplant
O angioplasty