14. Intensified means something becomes stronger. In this sentence, choice C. Heightened is the appropriate answer. "His feelings of anger heightened as the crow drew nearer to gaze at the scene of the defeat." His feeling of anger became stronger.
15. Antics are wild actions, shenanigans. In this sentence, choice C. tricks is the appropriate answer. "The students were thrilled by the tricks of the clown". They were thrilled by his wild actions.
Hope this helps!!
The simplified expression is 
Explanation:
The expression that we have in this problem is

We want to simplify this expression: in order to do so, we apply the rule to solve the square of a binomial:

Where in our expression, we have:

So, the various terms are:

Therefore, the final expression becomes

Learn more about simplify expressions:
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Friday
August 17, 2018
11: 30 p.m.
Dear Diary:
I am writing to you to share with you a very touching experience I had today. I got an opportunity to visit an old age home. It is a kind of home for those old people who for some reasons cannot stay with their grown-up children or those who don’t have any family member to care of them.
I felt very emotional interacting with an old lady. Although she is an affluent woman, she has to live in the home because both her daughters are married and well-settled. Her husband passed away long ago. She said she had opted to live at the Home for many facilities such as safety, security, lodging and boarding, and the most important thing-- company of peers.
I was so sad and depressed to see first time in my life there are such homes where the old people have to live without families. I personally feel people living in such old age homes feel very lonely and abandoned. The old people need their sons, daughters, grandchildren to live happily. Why is it that in our country the old fathers and mothers cannot live with their married daughters’ families?
I have decided that I shall be visiting the old age home regularly to give company to the old people living there.
Answer:
Because it shows how Hyde continuously plagues Jekyll.
Explanation:
The excerpt shown above presents elements of Gothic literature, through a narrative with a strong sense of horror and fear, natural from this type of literature, in addition, it presents an ominous, uncomfortable, agonizing tone that shows how Jekyll is constantly being tormented and tortured by Hyde, without showing a minute of tranquility and fullness. However, the excerpt gives the feeling that evil will not hide forever and that everything is always revealed.