Meanings of the given words: Distant : Separated by space. Far : at, to, or by a great distance (used to indicate the extent to which one thing is distant from another).
Removed : take (something) away or off from the position occupied.
Reserved : slow to reveal emotion or opinions.
Separate : forming or viewed as a unit apart or by itself.
Taking = the action or process of taking something.
Toying = consider (an idea or proposal) casually or indecisively.
Shifting = move or cause to move from one place to another, especially over a small distance.
Turning = a place where a road branches off from another.
For eg. "I was toying with the idea of writing a book"
So, Shifting is the correct answer. Because other words mostly related to particular objects but only shifting relates to every single object so shifting is correct answer.