Which of the following is a symptom of a heart attack?

Chest pain or discomfort is a classic and prominent symptom of a heart attack. This symptom can manifest as a feeling of pressure, squeezing, fullness, or pain in the center or left side of the chest. It may last for more than a few minutes or go away and return. This discomfort can also radiate to the shoulders, neck, arms, back, teeth, or jaw, making it a critical warning sign of an impending heart event.

While weight loss, headache, and nausea can occur in various medical conditions, they are not specific or classic indicators of a heart attack. Sudden weight loss may relate to other health issues, a headache could signify tension or migraine, and nausea can arise from numerous causes, including gastrointestinal issues or anxiety, but they do not directly correlate with the heart attack's typical presentation. Recognizing chest pain or discomfort is vital for timely medical intervention, as it often signals a need for immediate attention.