Could you please give the examples?
When you make an inference while reading<span>, you use clues from the story and your own knowledge to guess about things the </span>author<span> doesn't say directly. As you read “</span>Raymond's Run<span>,” make inferences to better understand the main character's </span>feelings<span>, </span>thoughts<span>, and ideas. Record your inferences in equations</span>
I believe it would be B, because there are two subjects that the speaker is referring to at the beginning of the sentence; the caterpillar and the leaf. When they use the word "it" in the second half of the sentence it is unclear whether they mean to say if "it" is the leaf or the caterpillar which they are carrying to their brother.
The answer is B. Compound sentence
Threateningly
We can tell that because the dogs are huddled together in fear, there's some sort of danger. Also the snarling suggests they are under caution or going on defense from some danger; they feel threatened.