I'm sorry, but this question doesn't make any sense? Could you explain it a bit? You should also consider if this question fits in the subject English? Maybe better in math?
A biased statement is one which asserts without real proof for evidence that something is out of the ordinary.
For example, the British people are traditionalists ( because of their having a Royal Family and class systems, etc).
People who are good at maths are brainy .
So bias really is an assertion without real proof
Answer is D Immune protein
Gregor has a habit of locking the doors while at home even if it at night. This is a clear picture that he is a paranoid man.
He is also cautious in his activities, therefore may imply that he has a secret that he has hidden from his family as well as other people.
Explanation
Gregor undergoes some scariest things that depict unusual situations, but still, he does not stop thinking.
Also, he does not sleep well.
Instead, he gets up earlier and travels to people living in luxurious lives.
