Question

researchers at the american college of cardiology told us that runners live an average of three years longer than non - runners.
strong source information and a strong reporting verb
weak source information
a weak reporting verb
no source information or reporting verb

Explanation:

The sentence has a specific, credible source ("Researchers at the American College of Cardiology") and a strong reporting verb ("told"). This matches the description of "Strong Source Information and a Strong Reporting Verb".

Answer:

Strong Source Information and a Strong Reporting Verb