This is an opinionated assignment, so there is no right or wrong answer. It is simply asking what intelligences you value the most. Think about ways to use each type of intelligence and then pick the ones that are most important to you.
D) Both B and C
What about floating vs sinking. Using common house hold objects like a rock, penny, small plastic bottle, and anything else you can find. Then drop them into a bucket of water and time how long it takes them to sink. Its easy and you won't have to buy supplies.
I read this book as a freshman and am now a sophmore. It was a great book. As for your question: Dill dares jem to go up and touch boo's house.