Gwen,an Advocate of Sexual Reform Knows (From Research Studies)that Condoms

Gwen,an advocate of sexual reform knows (from research studies) that condoms can prevent sexual transmitted diseases as well as pregnancy.She decides to educate incoming freshman at her university about the advantages of using the condom through a short film depicting various characters.Some of the characters portray traditional mindsets (refusing to wear condoms) ; some portray the more liberal mindsets (proponents of condoms) ; and some of the characters are transitional characters who move from traditional to more liberal in their adoption of condom use.She plans on recording the rates of pregnancy/STDs for the incoming freshman at her university before and after the educational short film.She also plans on comparing her results with those of freshman at a different university with similar demographics who do not watch the educational short film.The experimental design that Gwen chose to use is

A) quasi experiment design.
B) time-series design.
C) nonequivalent control group design.
D) multiple time series design.
E) Solomon 4 group design.