Is 7.5 meters a reasonable height for an adult?

No, 7.5 meters is not a reasonable height for an adult, as it is equivalent to approximately 24.6 feet. The average height for adult humans typically ranges from about 1.5 to 2 meters (5 to 6.5 feet). A height of 7.5 meters far exceeds any known human height and is not biologically feasible.