The correct answer is<span> The phases of the moon are caused by the Earth casting a shadow on the moon.
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The moon's size does not vary based on it's phase, it's just what is visible that varies which occurs due to the shadow of the Earth and the way that the Moon orbits the Earth.
A relative pronoun usually introduces an adjective clause
The question is about Hester and Ms. Walker who is her teacher.
Hester is a smart girl, she have new ideas to present and she walks towards Ms. Walker's desk . She wants to present her new idea to her but she is also nervous that she would forget the phrase in her mind that she keeps on repeating so she don't forget the phrase she have thought.
She is worried about forgetting her idea when she goes to Ms. Walker and she then hands over the letter about her new idea and when Ms. Walker accepts to consider her idea she is proud of her convincing letter.
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It is d because people couldn’t find out if it was true or not
