If a person abruptly stops an intense cardio workout without cooling down, then an aneurysm and heart attack may occur.
Answer: C
Cardio means heart so you can eliminate D. When you work intensely and abruptly stop you weaken the artery wall which will cause an aneurysm.
A, B AB and O, O being the most useful, because O blood can be given to everyone, but also the most selective, since they can only receive O blood
Thats true just depends on what you do with it
He treats them nice loving and dosent force feed them