<span>"On average the cost is $50.00 per unit, however, many parents of young athletes say it is a small price to pay." </span>
Answer:
something that lasts for a long time
Explanation:
life lasts for a long time
The error in the possessive construction is that, instead of passenger's, it should be "passengers'". The apostrophe should be after the letter "s" because the noun is in the plural form. The correct sentence would be "Passengers' concerns about cell phone use on planes are justified."