What key information is typically indicated on a Sectional Chart?

The correct answer emphasizes the critical details provided by a Sectional Chart, which serves as a fundamental tool for visual navigation in aviation. Sectional Charts depict a variety of essential information, including airspace classifications, which inform pilots about the rules and regulations pertaining to different types of airspace they might encounter. They also illustrate terrain features, such as mountains and valleys, which are crucial for visual navigation and situational awareness.

Navigational aids, such as VOR stations and NDBs, are shown, helping pilots determine their position and navigate effectively. Additionally, the chart includes information on obstructions like towers and tall buildings, which is vital for maintaining safe altitude clearances and avoiding potential hazards during flight.

Other options do not align with the primary purpose of a Sectional Chart. Weather patterns and temperatures are typically found on aviation weather charts, while flight routes and schedules pertain to air traffic control rather than navigational charts. Aircraft specifications and maintenance protocols are included in the aircraft's technical manuals, not within the scope of what a Sectional Chart provides. Thus, the key details regarding airspace, terrain, navigational aids, and obstructions make answer choice B the most accurate representation of the information presented on a Sectional Chart.