Read the dictionary entry for the word stagnation. stagnation \ stag-ˈnā-shən \ noun: a state of inactivity or lack of growth

Based on this definition, which sentence best illustrates the use of the word stagnant?

After years of losing money, our business is finally strong and stagnant.

These exciting new classes should boost our stagnant enrollment.

Due to the heavy rain, there was no one on the stagnant beach this morning.

Bring us your stagnant clothes, and we will either donate or recycle them.