The first toys in the hall of fame include barbie, crayola crayons, monopoly, and lego bricks. at least two toys have entered the hall of fame each year. some are name brands, like scrabble. others are the basic ideas of toys, like the jump rope. dolls, action figures, and board games have entered the toy hall of fame. in 2007, the atari 2600 game system became the first video game system in the hall of fame. even the cardboard box is in the toy hall of fame. in 2002, the hall moved to rochester, new york. each year, the hall does a big event when new toys enter the toy hall of fame.

which of the following is the best introductory sentence for this paragraph?
a. the ball did not enter the national toy hall of fame until 2009.
b. some of the toys in the toy hall of fame are not just simple toys.
c. there are many cool toys that should be in the toy hall of fame.
d. in 1998, the national toy hall of fame opened in salem, oregon.