Let's start with an obvious one. He certainly is not a coward. He was willing to take on a dog that was ferocious; in contrast, Heathcliff makes the comment that the "cowardly children also crept forward..." That quoted phrase is somewhere near the very end.
Your first example of yellow underlining is a wonderful example. Heathcliff is quite common and he would use common English. He characterizes Cathy as being gentile and not given to saying anything contrary to her upbringing.
I would note that Heathcliff followed grumbling execrations and vengeance. [an execration is a threat denouncement or curse. Again Heathcliff is showing his common upbringing. Cathy would choke before she would utter such things. This one is kind of iffy. You could omit it. It is by inference something that shows that Heathcliff is different].
Your second underlined statement is correct. It characterizes Heathcliff as a robber and a thief and part of a lowlife gang. You could go on. Robert does not hesitate to make his feelings known and adds to what you underlined.
Your third underlined statement is correct as well. I have added two but your examples are fine.
Who marks this? Make an appeal if you get it wrong. Interpreting literature is that way. This is not exactly a factual question and the only way to answer it is to compare Heathcliff to someone else. I chose Robert and Cathy. Write your instructor and provide some of the evidence you have provided here.
A precedent is an example
Answer:
to me I think it is C Because it makes more sense but at the same time I think it's B but I think you should choose C if not then B and if they are both wrong than choose another answer!
Answer:
The coronavirus is continuing to spread and people are told to stay at home so that lives can be saved.
OR
Everyone needs to understand that the coronavirus is spreading in all areas to include their own communities.
OR
The elderly and those most at risk who have a compromised immune system should not travel during the pandemic.
OR
Many experts have warned against travel during the pandemic.
OR
Everyone needs to be responsible and do everything they can to put a stop to the spreading of the coronavirus.