What is a proper noun for truck

Read the excerpt and answer the question. the boards themselves seemed to remain upright not from being nailed together but rather from leaning together, like a house that a child might have constructed from cards. what best describes the figurative language in the sentence above? idiom simile onomatopoeia personification

The empire state building was a.constructed by one hundred workers. b.was first lit up by president roosevelt. c.has more than one hundred stories. d took several years to complete.

According to the study what did john steinbeck do to prepare for his book the grapes of wrath