Hi there!
First, let's count the sides. There are 6 sides, which means the figure is a hexagon. Concave means that is creates a cave and lines are over each other. Convex means that it looks "normal," so to speak. I've attached an image showing both below. Anyway, this figure would be convex. Therefore the answer is a convex hexagon, answer choice 4.
Hope this helps!! :)
If there's anything else that I can help you with, please let me know!
