According to the passage, which of the following is not a possible cause of many heart attacks?

Decreased blood flow to the heart

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Increased blood pressure

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Lower heart rate

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Increase in hormones

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Solution

The correct option is A Lower heart rate
According to the passage, "An early morning rise in blood pressure, heart rate and concentration of heart stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks", so, option (C) lower heart rate is not a possible cause of many heart attacks and is the correct answer.

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