No, you cannot have a heart attack and not know it.
I can infer that they have less energy and a poor quality of life. Also that they are really skinny and malnutritioned.
Audi-- TO HEAR or by ears
So the answer would be D) recite them aloud
Records trace the history of soccer back more than 2,000 years ago to ancient China. Greece, Rome, and parts of Central America also claim to have started the sport; but it was England that transitioned soccer, or what the British and many other people around the world call “football,” into the game we know today.