Which of the following best identifies one of the themes of the poem excerpt? one must abandon all material objects to truly enjoy life. all things and people are interconnected. formal institutions such as religion and law have no purpose in society real knowledge is gained from books and formal education

1. in which sentence is the underlined portion a predicate nominative? for astronauts, going into space to repair orbiting equipment becomes a challenge. for astronauts, going into space to repair orbiting equipment becomes tricky. for astronauts, going into space to repair orbiting equipment becomes challenging. for astronauts, going into space to repair orbiting equipment becomes frequent.