For the 17-foot passenger stairs, which of the following aircraft can transport them?

The C-17 Globemaster III is specifically designed to accommodate a variety of cargo, including large equipment such as the 17-foot passenger stairs. Its spacious cargo hold allows for the transport of oversized items, and it features a loading ramp that simplifies the process of loading and unloading large equipment like passenger stairs.

While the C-5 Galaxy also has a significant cargo capacity and could transport the stairs, the question focuses on identifying all applicable options. Selecting only the C-17 might overlook the C-5's capabilities. The C-130 Hercules, on the other hand, has limited cargo space compared to the C-17 and C-5, which would not typically allow it to carry such large pieces of equipment. Therefore, the correct understanding aligns with recognizing that the C-17 can effectively transport the 17-foot passenger stairs without consideration of the other aircraft options.