Which one of the following sentences correctly uses a comparative adjective?
a. this is the worse picture i've ever seen.
b. alicia is a gooder swimmer than marilynn.
c. of the three girls, janet is the better speaker.
d. george has a bigger appetite than harry.

In the following statements, who is a free rider? a. andy is reading a book named "mission to mars." b. the u.s. government has announced a 21 percent defense spending increase. c. ted does not pay taxes but uses roads and highways. d. nick buys groceries from safeway because it's closer to his home.