Final answer:
To maintain straight and level flight during a flight test, you need to use a view limiting device to restrict your field of vision and focus on the instrument panel. This allows you to maintain a constant altitude and heading.
Step-by-step explanation:
In using a view limiting device on your flight test for straight and level flight, you must maintain a constant altitude and heading. This means you need to keep the aircraft flying at a specific altitude (usually measured in feet) and maintain a straight path (usually measured in degrees).
By using the view limiting device, such as a hood or goggles, you are restricting your field of vision to only see the aircraft's instrument panel, which helps you focus on maintaining the desired altitude and heading.