10 points

why does each trick explained in "cool eye tricks" end with a section entitled "what happened? "

a. it is only after the steps for completing each trick are laid out that readers are ready to understand why the trick
works.

b. each trick is explained spatially, and the "what happened? " section describes each trick based on what the writer
observes last.

c. this part of the text provides readers with an unexpected twist or surprise, which only works at the end of each
passage.

d. because the details of the tricks are explained in steps by order of importance, the "what happened? " section
reveals the least important details.