Final answer:
The Cirrus SR20/22/22T aircraft have a curvy fuselage similar to the PA-28 Cherokee, aligning with option c) in the question.
The correct option is c.
Step-by-step explanation:
The Cirrus SR20/22/22T aircraft have an exterior design characteristic that can be described as follows: they do not have a constant slope from the top of the fuselage to the base of the vertical stabilizer, nor do they exhibit a sudden drop in this area.
Instead, the fuselage design is more comparable to a PA-28 Cherokee, which is known for its curvy fuselage.
Therefore, the correct answer to the question would be option c) Has a curvy fuselage similar to PA-28 Cherokee.
The correct option is c.