The setting will most likely affect the plot in the way that the power failure will hinder the movie and video games as the girl, her parents and guests are not done yet with the cake and food at the table and as read in the story, they would afterwards watch a new-release movie, and later they girls would play video games until time to go sleep, but now with the power cut they will not be able to do such things because there will not be power for the TV not for the console.
Answer: a. what the author was trying to achieve
Explanation: It's either this one of d. because what the author was trying to achieve is what the authors purpose for writing the work is and an authors work should accomplish or close to accomplish their purpose.
Mia's cat
Mark's crayons
Dad's arms
Clint's shirt
Sarah's tools
Hope this helps.