Indicating your answer This test uses multiple-choice questions. To answer each multiple-choice question in your exam click your answer with the mouse. Practice: Select an answer now. Notice that the open circle next to the answer you chose is now filled in. Change your answer by selecting different choices. Click Next to go on. Sample Question The sky is 1) purple. 2) yellow. 3) green. 4) blue. Click on the 'Next' button to continue.