You can see what your students answered for any attempt of any question, as well as what feedback they received from the system on each attempt.
From the Grades page, click on a score.
Navigate to different questions by clicking the question in the left sidebar, or by using the arrows next to the question number at the top left.
The *Correct Answer option in the Attempts drop-down and the Solution button are for your reference only. They do not tell you whether the student has viewed the solution, and they do not represent an entry by the student.
The student's Assignment Score is shown at the top.