"Now that Trump has won the Iowa caucuses he's ready to save the rest of the country from Biden"

3. What objects are symbols?

In the given sentence, the objects that can be considered symbols are:

1. "Trump": It can be seen as a symbol of political power and leadership.
2. "Iowa caucuses": It can be seen as a symbol of the initial success and support for Trump's campaign.
3. "Biden": It can be seen as a symbol representing the opposing candidate or ideologies.