Is this good grammar? Tamatoa plans to go to the amusement park this weekend, unless there's a thunderstorm

The excerpt above is from page 21 of harry potter and the sorcerers stone by j.k rowling. which passage represents a

Which statement best expresses a claim a.although many people believe homework is a crucial part of school, there is evidence to suggest that homework may not be as valuable as once thoughtb.the amount of homework given by some high school teachers is insane and actually has negative effects on other important aspects of a student's life c.i would have so much more time to do the extracurricular activities and hobbies i enjoy if i did not have to spend most of my evenings doing homework d.some schools have adopted homework policies that limit the amount of homework that teachers are allowed to assign their students each night

10. what is the purpose of the introduction in an essay? a. to establish the main idea of the essay. b. to focus on current statistics c. to explain the main idea to the reader d. to highlight the most important concepts