Explore the 'Subjects' section of the City Observatory website. List all the main subject categories presented on this page.
Navigate to 'cityobservatory.org'. Click on the 'Subjects' link (ID 21). List all the main subject categories displayed on the page.
The agent successfully navigates to the 'Subjects' page. The agent lists 'Economic Segregation', 'Core Vitality', 'Talent & Prosperity', 'Questioning Congestion Costs', 'Urban Form & Transportation', and 'Innovation & Entrepreneurship' as the main subject categories.