6256. During his stay in Canada, he had quite a few frustrating experiences.

✅ The correct answer is option A.
Disappointing : failing to fulfil someone’s hopes or expectations.

Enthusiasm : intense and eager enjoyment, interest, or approval.

Humiliating : making someone feel ashamed and foolish by injuring their dignity and pride.

Repulsive : arousing intense distaste or disgust.

Frustrating : causing annoyance or upset because of an inability to change or achieve something.

Synonym of Frustrating is Disappointing