What are the four communication skills that have proven to be very effective when sharing information a. aggressiveness b. body language c. cooperation d. compromise

The answer is B. Body language. 

B. alice is pretending there is a way through the glass when in reality that would not be physically possible therefore she has to pretend. but i think d is also possible because alice notices the glass is actually melting away which is also not possible either

Omit means cleave out .