You were reading a novel on a lazy sunday afternoon when your six-year-old niece asked if you would her sort through and find the right lego pieces to make an airplane just like the one in the lego design booklet. reading the novel most likely involved your hemisphere, while matching the lego design most likely involved your hemisphere.

The correct answers are left; right.
The left side of the brain (in charge of controlling the right side of your body) is responsible for everything that has to do with logic, concentration, reading, thinking, etc. On the other hand, the right side of your brain (which controls the left side of your body) is responsible for your creativity, among other things.
So your left hemisphere controls your reading, and your right hemisphere controls your matching the lego design.

More context .

B. it promoted the powers of the executive branch