Structural support and storage of molecules
The answer is C, Irrigation Canals.
The phenomenon is known specifically as the change
blindness. This is a phenomenon where in the observer has fail to notice the
differences that has been laid out to him or her when a certain visual stimulus
is triggered or the observer is exposed to.
This is an example of face-saving behavior.
She did this in order to avoid feeling embarrassed, or to lessen the embarrassing situation which may have happened if she showed that she heard them fighting. By pretending she didn't hear anything, she kept the appearance of a normal situation.
The answer is not b bc they were different times