Answer: A
Explanation:
The evolution of dogs is a scientific topic that has a lot of scientific research backing it up. So, the most reliable source would be one that is revised by people well versed in this area of knowledge. An academic paper revised by peers is an official, trustworthy source.
Answer:
C) very, very happy
Explanation:
the phrase "on top of world" is used to describe the feeling of joy, or extreme happiness.
The answer is theme. Theme is the lesson you are supposed to learn or message you are supposed to ger from reading the story.
