AARP's Feb. 22 News Quiz: Test Your Knowledge

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We recently listed America’s favorite multi-market online retailers, as calculated by the American Customer Satisfaction Index. Which merchant led the list?

Amazon scored 84 on a 1–100 scale in the survey, edging out Costco, which had a score of 81.

As we reported, buying a used car from a rental car fleet can save you money, but there are also issues. Which of these was NOT among the potential issues we listed?

maintenance Wear and tear Potential resale value All of the above

The cars actually receive regular maintenance as part of a rental company’s fleet.

New research suggests that too much of this B vitamin could be harmful to the heart, we reported.

Niacin is commonly found in meats, peanuts and fortified breads and cereals.

This comedian recently has been using online comments about her appearance to educate critics and fans about endometriosis, which has made her face “puffier than normal right now,” she

wrote.

The condition, in which tissues similar to the lining of the uterus grow elsewhere in the body, affects about 10 percent of women.

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