Final answer:
The Cessna 152 has a single window on each side of the aircraft, making option a) the correct answer.
Step-by-step explanation:
The Cessna 152 is a popular single-engine, two-seat, fixed tricycle gear general aviation airplane used primarily for flight training and personal use. In regards to the student's question about the number of windows on a Cessna 152, the correct answer is:
a) Has a single window on each side.
The Cessna 152 is designed with one window on each side of the aircraft, providing visibility for both the pilot and passenger. This feature is part of the Cessna 152's simple yet functional design which is one reason why it's a favored aircraft for flight training.