Because after all they're still in the same family, and if they don't get along well, especially when they're older, arguing will often happen and they cannot solve serious problems
Answer:
<h3>O herself </h3>
Explanation:
<em>Katie</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>female</em>
Trees fall in winter,
So the birds refuse to sing,
This is treacherous.
D. a series of events that build the plot toward the climax
C, i think is the answer.