Which symptom is the main indication that a person is having a heart attack? A. sore arms
B. sudden pressure or pain in the chest
C. vomiting
D. shortness of breath

The answer is D, shortness of breath. You usually cannot breathe easily in a heart attack, or cannot catch your breath.

one time i was looking at my neighbors screen door to see if the door was open i was squinting like a fool for 10 minutes before realizing he was starring back i then died from embarrassment and am now typing this from the ghost world