(1) reality show producers who give their "actors” scripts are not being unethical because everyone knows that the shows are scripted. (2) in the past few years, dozens of entertainment news sites have published articles about the use of scripts on reality shows. (3) one star of a popular reality show even read from her script as a joke on a radio show. (4) furthermore, a recent study indicates that 86 percent of reality show viewers believe that the producers purposely create fights on the shows to make them cooler.

which revision best improves the formality of the paragraph?

(a) using the contraction “aren’t” for “are not” in sentence 1
(b) breaking up sentence 2 into several short sentences
(c) replacing “popular” with “top” in sentence 3
(d) replacing “cooler” with “more dramatic” in sentence 4