Formal.
As far as I know, there is no such thing as either standard or practiced diction. Informal is the way you communicate with your friends, for instance, which is not how you would write a thesis paper, legal document, etc.
Answer:
"What is Lady Macbeth's role in Macbeth's plan to kill Banquo and Fleance? It is her idea from the beginning. ... They leave Banquo in a ditch. Banquo's son, Fleance, escapes."
At the end of what novel?
Answer:
Hello,
The answer would be A,
<em>Some animals can change their appearance to stay safe.</em>
The text provided says that the animals change their appearances to avoid getting eaten by predators. It says " Some fish puff up their bodies to <u>scare other animals away.</u> Some frogs change how their skin looks to<u> blend into their surroundings and avoid predators.</u> Many octopuses can make themselves look like other animals <u>to avoid being hunted</u>."
This shows they are just trying to survive.
Therefore, the answer would be A,
<em>Some animals can change their appearance to stay safe.</em>
Hope this helps! :)
<em>-Fishylikeswater</em>