Infection of previous operation. The surgereon would need to go in and and remove the infection and possible a little more of the leg...
The correct answer would have to be C age.
Muscular strength is how much you can lift/push/pull, ect. Muscular endurance is how long you can do something with your muscles. Like if you have to put your are straight out in front of you and hold a 25 pound dumbbell. Your will get tired and give out. the more Muscular endurance you have the longer you can do something with your muscles.
Specialized glandular epithelial tissue and a vast blood supply
C) 1967 i think im not sure need to check on that