This is a hook sentence ?: "Carefully, I looked around. There were many people of different nationalities, I noticed immediately by their accents."

no this is not a hook a hook sentence is A hook in the essay is a catchy sentence or paragraph in the introduction which serves as an attention-grabbing element. The effectiveness of the hook is defined by its ability to motivate people to read the entire text. what you have here is more like foreshadowing where you get the reader attention for instance something is about to happen.

Explanation:

the answer is a hoped this