B obviously .................
Answer:
they are stronger and faster.
Explanation:
independent variables, dependent variables, and experimental units hope this helps
The early signs of a heart attack occur in 50% of patients that have a heart attack according to the Society of Cardiovascular Patient Care. If the early symptoms are noticed the treatment can be administered to prevent damage to the heart as the most heart damages, 85% occur in the 2 hours following the attack.