Hello there! The answers are:
Where is your favorite vacation spot?
What is the last book you read?
Let look at all the options:
What year did you graduate high school? - This is bad for 12 year olds since mot 12 year olds are 6-7th through 7th grade, and graduate when they are 17/18.
What color was your first car? - You can't get your drivers license until you are 16 (at least in the U) so a 12 year old would not own their own car.
Where is your favorite vacation spot? - You can co on vacation young as a baby, so this would be a suitable question.
What is the last book you read? - By 12 you should for sure be able to read, so this is a correct choice.
Should taxes be increased to fund a new park? - 12 year old are way to young to understand taxes so this is also incorrect.
I hope this helps and have a great rest of your day! :)