Question

When a writer uses foreshadowing, it

Answer 1

Hints to readers that something is of significance and gets them interested
although i can see all the others happening

Answer 2

When a writer uses foreshadowing, it hints to readers that something is of significance and gets them interested.

Foreshadowing is a literary device in which a writer provides an advance hint of what is going to occur later in the story. Foreshadowing can often be found  at the beginning of a story, or a chapter, and it helps the reader develop expectations about the upcoming events.

According to that explanation, the second option is correct.