Hi!
I agree that the answer is D. Retiring. It seems to be the most sensible choice.
Subject: "Each of the staff members"
Verb: "take a training course in the new software."
Answer:
Can I do this work? is the correct answer
The theme in a story is it’s underlying text
India's geography is sort of tropical. In some regions green trees and grass stretch as far as the eye can see. India has high mountains, vast deserts, coasts, plains, forests, and more. India even has its own islands. In Cuba the geography is far less enticing, filled with rolling plains and rugged hills it is hardly as vast and exotic as India. Cuba has a few mountains but is mainly a stale island.