Mini-Game: Which is the Best Transportation Method

This week I have been working on a short mini-game that lets you choose the best transportation method to get to the store. So far, I have got the bike working. You control the bike by using your keyboard. The bike is red and the car is in rainbow colors. In my game, you have to click the correct transportation method and use your keyboard to get to the store. When you get to the store, either a correct or incorrect scene comes up. The problem with this mini-game is that I can't find the code that allows you to be able to click one out of two objects and use your keyboard to control one of them.