Correct choice is (c) <optgroup>
Explanation: <progress> element in HTML shows an indicator indicating completion progress of a task, which is typically displayed as a progress bar. <select> element specifies control over a menu of options. <option> represent item contained in <select> element. <optgroup> element in HTML creates a grouping of options within <select> element. This element should not be nested. It includes global attributes like disabled, label and many more.