Becky has to choose between three brands of lip balm. which is the most reliable factor to consider when making her choice?

a. the brand has been advertised by a famous movie star.
b. her sister has been using the brand and really likes it.
c. the brand costs significantly more than the others.

The correct answer is B.

Her sister is the most reliable source when making this decision. Brands that have been advertised and endorsed by famous movie stars are unreliable because they promote products to make money for themselves not for the public benefit. Brands that cost significantly more can sometimes be better but more than likely this isn't the case, sometimes all you are paying for is the brand name and nothing more.

the more fit you are, the faster the recovery. your heart rate drops most sharply in the first minute after you stop exercising; it should then fall about 20 beats a minute—a drop of less than 12 beats a minute is considered abnormal. this “recovery heart rate” is measured as part of an exercise stress test.