Gibbs Free Energy and Thermodynamic Favorability Practice Test

A student studies the reaction

$$2\text{NO}(g)+\text{O}_2(g)\rightarrow 2\text{NO}_2(g)$$

Thermodynamic signs for the reaction are $\Delta H<0$ and $\Delta S<0$. Under which conditions is the reaction thermodynamically favorable (spontaneous)?

In a laboratory demonstration, carbon dioxide is converted to solid dry ice:

$$\text{CO}_2(g)\rightarrow \text{CO}_2(s)$$

For this phase change, $\Delta H<0$ and $\Delta S<0$. Which statement best describes when deposition is thermodynamically favorable (spontaneous) as written?