Answer:
The correct answer is c. Space shuttle, shuttle.
Explanation:
An aeronautical engineer would not work on a space shuttle because space shuttles are designed and built by aerospace engineers, not aeronautical engineers.
Aeronautical engineers focus on designing and building aircraft that operate within Earth's atmosphere, such as airplanes, helicopters, and zeppelins. Aerospace engineers, on the other hand, focus on designing and building spacecraft that operate outside of Earth's atmosphere, such as satellites, space stations, and space shuttles.
Therefore, the answer is c. Space shuttle, shuttle because it is not a type of machine that an aeronautical engineer would work on. The other choices (a. Zeppelin, b. Jet, and d. Airplane) are all types of machines that an aeronautical engineer might work on.
