She needed to rest somehow , but most important was making sure the Hunter would be ready to go , and he gave her a job to do . She wandered over to the door into the lab and locked it . After that , she wandered back to the closet X had nodded at , and started rifling threw things .

Based on the preceding passage, choose your answer for question What may have been the reason she locked the door ?
Pick your answer from:
1). So she could go to sleep without being caught by Hunter .;
2). So she could be alone with Hunter and not be disturbed .;
3). So she and X could rifle through the closet .;
4). So no one would see her going through the storage spaces .;
The answer is:
4).