I really need help figuring this worksheet out for my 7 year old.?

I need to guess each rule and write it down. i have 2 circles. in one circle (rule a) there is a diamond, square, and tzoid. the other circle (rule b) there is a pentagon, oval and triangle. in the middle of these 2 circles there is a rhombous and a rectangle. question 1 says guess rule a. question 2 says guess rule b. question 3 says draw 1 shape that fits both rules. question 4 says draw 1 shape that does not fit rule a or rule b.