1. Safe
2. Dangerous
3. Not sure
4. Not sure
A IS IT I THINK Sorry cap lock was on
Neither, a metaphor would be like "I'm so hungry that I could probably eat an elephant," while a simile would have 'like' or 'as' to describe something.
"A. her fearlessness because the dog could kill her" is perhaps the best option from the list, but it should be noted that there are other elements as well.