Answer:
The answer is 2: Using what they do know about the story to guess at a words meaning
Step-by-step explanation:
This is because if you use "context," you are using material such as illustrations or surrounding words/sentences to find a definition for the word that makes the most sense. For example, if you had this sentence: The fluffy dog jumps over a blue river.
Pretend you don't know what fluffy means. You can figure it out either by looking at an illustration of the dog, or saying, what do I think this means?
List your guesses of what you think the word means, based on surrounding images/sentences in your head. Insert your guesses in place of "fluffy" and then choose the one that makes the most sense. Hope this helps!