Input: You are still alive if you do not have a heartbeat.
(A) All humans have a heartbeat and without a heartbeat you are not like other alive humans so you are dead.
(B)Your heartbeat is what keeps you alive and breathing by transporting blood so without it you are dead.
(C)People that are alive are warm because of their heart transporting blood and if you do not have a heart you are cold which means you are dead.
Output: B