Read this excerpt from the early history of the airplane by wilbur wright. i refer to the soaring flight, by which the machine is permanently sustained in the air by the same means that are employed by soaring birds. they spread their wings to the wind, and sail by the hour, with no perceptible exertion beyond that required to balance and steer themselves. what mood does wilbur wright suggest in the passage? a. hopeful b. heavy-hearted c. amused d. peaceful