In Peking Dust, how do the Peking cart drivers treat their horses? They keep the horses in their harnesses all day.

They provide the horses with little decoration.

The horses are valued and well cared for.

The horses are overworked and mistreated.

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.