Why did you join the club?
she knew that.
biology is the study of life.
is the concert Friday or Saturday?
Stop that immediately!
when are you stopping by again?
the forecast is for rain all afternoon.
It seems that you have already filled the correct pronoun in the blank provided. Yes, the correct answer to complete this sentence is the pronoun "this". The pronoun "this" is an example of a demonstrative pronoun. Other demonstrative pronouns also include these, those, and that. Hope this answer helps.
Dude tell Jimmy that chinese food slaps
Oh yeah and the answer is the 2nd option