Sophia Learning offers a free trial that allows learners to sample any course. This trial lets learners complete up to the first Challenge (i.e., a quiz). To start a free trial, navigate to any course page and select "Try this Course."
Once you complete the Challenge, continue the course by becoming a member. Progress made during the trial can be either saved or reset - your choice! - when transitioning to the full course membership.
Check out the following article for more information on Sophia membership: Membership Overview and Pricing