The correct response to how Caesar's viewpoint changes in this scene is:
Caesar decides to stay home, but when Decius claims he will be crowned by the Senate, Caesar decides to ignore Calpurnia's pleas.
Initially, Caesar is convinced by Calpurnia's fears about her ominous dream and considers staying home. However, when Decius persuades him that going to the Senate could lead to him receiving a crown, Caesar is swayed to disregard his wife's warnings and ultimately decides to go after all.