What Made that Spot?

 

Exhibit A

a) a paperclip

b) a black pen

c) a pencil

Exhibit B

a) a regular blue marker

b) a washable blue marker

c) a permanent blue marker

 Exhibit C

a) a NONwashable mini red marker for children

b) a permanent red marker

c) a washable children's marker

Answers

The marks on the stair trim were made with a black pen. The marks on the wall were made with the Sharpie. The mark on the floor was made with a washable red marker (thank goodness).

As I completed writing this blog entry, I let Noah take the quiz.  

Strangely, he didn't get a single answer correct.
I hope he doesn't get the idea that I approve of his artistry.