Answer:
The answer is( B) By describing Alice’s head hitting the roof
Step-by-step explanation:
Because it is logical to tell someone that is growing tall like where it says here, " Just at this moment her head struck against the roof of the hall; in fact, she was now rather more than nine feet high, " As you can see the author is describing how tall she is. You can even look at key words such as " struck against"
Hope this helps!