Correct option is A
Given Information:
· Five colleagues: Emma, Ethan, Grace, Hannah, and Isaac.
· They are sitting on a circular table facing towards the center.
· Hannah sits in between Emma and Grace.
· Isaac sits to the right of Ethan.
· Ethan and Emma are not neighbors.

From the above seating arrangement Hannah sits to the immediate left of Grace.
Correct answer is (a) Hannah.