Describe the main character from Hatchet

How does this image the reader to understand seismographs?

When i was four years old, my dad and i a tree in our front yard. it was a tiny, fragile sapling. he promised me that it would grow tall and strong, but he said that i had to be patient. until i turned 18 years old, dad and i it every year on my birthday. choose the words that correctly fill in the blanks.

Which is these is not a benefit of parallel structure? a)clarity b)classification c)emphasis d)balance