The only sentence from the list of options that correctly forms the plural of 1990 would be "A. My older brother was born in the 1990's" since an apostrophe is needed.
It has a positive connotation, suggesting the astrophysicist's long lasting and innocent fascination with the universe.
You would have used B. context clues. The reasoning for this is you have used other words in the sentence and around this word to help you figure the meaning.
[] Answer []
Point of view
[] Explanation []
The tone in a story is the view or perspective from which the story is told. If the story is told in the view of the villain's side, then the tone would definitely change. If the tone is told from the hero's perspective, then the tone would be different as well. The point of view reveals the tone because depending on who's point of view you are reading about or from, the mood will have changed. This is why some author's write a chapter in one person's point of view, then write the next chapter in the next person't point of view. The tone is based on the point of view.
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One theme of "Rikki-Tikki-Tavi" would be good must over come evil. In the story, Rikki has to fight two cobras, Nag and Nagaina, to protect his garden and Teddy. He is frightened of them because they are stronger and bigger than he is, but he overcomes his fear and fights them anyway.
