A HR Director for a medium size public company. Under Americans with Disabilities Act are the following workers entitled to a "reasonable accommodation" and, if so, what would be "reasonable":

[A] An executive secretary who suffers profound hearing impairment.
[B] A current worker seeking promotion to shift leader on the shipping floor. He suffers from tinnitus. (A sound in one ear or both ears, such as buzzing, ringing, or whistling, occurring without an external stimulus and usually caused by a specific condition, such as an ear infection, the use of certain drugs, a blocked auditory tube or canal, or a head injury.
[C] An worker returning from temporary disability due to a work related injury seeks to return to his old job as a delivery van driver. In the accident he lost his left leg.
[D] An applicant for a sales position suffers from Agoraphobia (Definition of Agoraphobia === Fear of open spaces. A condition characterized by an irrational fear of public or open spaces)