Which of the following can disqualify a student pilot from flying?

Flying at night without the required visibility can disqualify a student pilot from operating an aircraft. This is due to the regulations that dictate specific visibility requirements for night flying. Student pilots are subject to restrictions that ensure their safety and compliance with aviation regulations. If a student pilot attempts to fly at night without meeting these visibility criteria, they are not only operating outside their authorized limits but also risking unsafe flight conditions.

In contrast, flying in visual meteorological conditions is not inherently disqualifying; in fact, student pilots can fly under such conditions as long as they have the appropriate training and endorsements. Flying solo is permitted for student pilots who have received the necessary endorsements, and flying with an instructor is a normal part of their training process. Therefore, adherence to visibility requirements at night is essential for maintaining safety and regulatory compliance, making it a valid disqualifying factor for a student pilot.