To persuade readers to use less light and to encourage others around them to do the same.
B. Someone opened the window because he or she was too warm.
The use of "he or she" is correct here because at the beginning of the sentence uses the word "someone" which is singular and the two must correspond, so the that one must be singular as well so it can't be "they" or "them"
You forgot to put the topic................. there is no topic
A hook relating to love is painful can be: "Because every time I think of you is the happiest and the saddest moment of my day. I will never understand why loving you hurts so much"
In writing a hook is a brieft introduction that helps catching the readers attention. A hook can be a quote, a question or just some words that give the reader a clue about the topic of the text.
