Which sentence uses an apostrophe correctly?

The stores' stock is nearly gone.

The final task was Bills' undoing.

The next days test will decide his' fate.

The restaurant's license expires next month.

The correct answer is the last sentence.

In the first sentence, the apostrophe should be placed here: store's

Second sentence: Bill's

Third sentence: There shouldn't be an apostrophe placed at his. Instead ... day's