Which two words or phrases in this excerpt from “the red wheelbarrow” by william carlos williams show that the wheelbarrow is an essential part of life on a farm ?

The correct answer is "So much depends upon". That is so much depends upon the wheelbarrow. By saying that so much depends upon the wheelbarrow the writer was trying to emphasize how essential the wheelbarrow is to life on a farm and the work involved. Including growing crops and hauling loads.

if its apex this should be the correct answer

war information to be released publicly must first be deemed useless to the enemy