Sarah Boxer mentions in her article some 30 children's animated films/stories throughout the years as direct evidence to support her argumentative concern about the lack of mothers. What does this significant evidentiary number help prove about Boxer herself?
a. that she wanted to barrage and overwhelm us with facts
b. that she really did her investigative 'homework' to be prepared
c. that she knew in order to argue convincingly
d. she had to have proof that she could choose whatever she wanted to from many sources