Identify all 'Always available' courses taught by Liz Bradley. For each identified course, provide its title, confirm if it requires a background in calculus, and state the minimum score needed to earn a certificate of completion. If no such courses exist, state that.
Navigate to the /Courses page. Ensure 'Courses' is checked and 'Tutorials' is unchecked under 'Show type'. Ensure 'Active' is checked under 'Show status' to view 'Always available' courses. Iterate through all listed 'Always available' courses. For each 'Always available' course, click on its link to view its details page. On each course's detail page, identify the 'Lead instructor'. If the lead instructor is 'Liz Bradley', then extract the course title, check the 'Prerequisites' section for calculus requirements, and navigate to the 'FAQ' section (if available) to find the 'minimum score needed to earn a certificate of completion'. If no 'Always available' courses are taught by Liz Bradley, state that.
Successfully identifies all 'Always available' courses taught by Liz Bradley. For each identified course, accurately provides its title. For each identified course, confirms whether a background in calculus is required. For each identified course, states the minimum score needed to earn a certificate of completion. If no such courses exist, explicitly states that no 'Always available' courses are taught by Liz Bradley.