Question

which headline is the best example of a fact?
new diet will boost your confidence
best baseball prank of all time
scandal spreads like wildfire
tornado death toll rises to 68

Explanation:

A fact is a statement that can be proven true. "Tornado Death Toll Rises to 68" can be verified with data (e.g., official reports on the number of deaths from a tornado). "New Diet Will Boost Your Confidence" is a claim that is subjective (confidence boost is a personal feeling). "Best Baseball Prank of All Time" is an opinion (what one considers "best" can vary). "Scandal Spreads Like Wildfire" is a metaphorical and not a verifiable factual statement in terms of exact spread details like a count.

Answer:

Tornado Death Toll Rises to 68