Interpret An allusion is an indirect reference to a famous person, place, event, or literary work. What allusion is made in the first paragraph of the story? How does this allusion shape readers’ understanding of Balboa’s character?

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.