Which underlined words are noun clauses? Select all that apply.

1. Having just finished running a 5K, I was in no mood to walk home.

2. I approached the podium with tears in my eyes.

3. Why some dogs turn vicious can't always be explained.

4. Being quiet iswhat seems impossible for a two-year-old. clauses?

Based on the given sentences above, the underlined words that are noun clauses are the following:

2. I approached the podium with tears in my eyes. The noun clause is "the podium with tears in my eyes".

4. Being quiet is what seems impossible for a two-year-old. The noun clause is what seems impossible for a two-year-old.