Answer:
My two year old brother showed an amazing amount of obstinacy, as he did not want to eat in what my mother made for his dinner that night.
Explanation:
Obstinacy: the quality or condition of being obstinate; stubbornness.
Answer:
StormEnd.
Explanation:
A two-year old's obstinacy makes him inflexible when having a whim, even though he is persuaded, he will not change his mind.