Which sentence correctly shows how the apostrophe is used to form a contraction?

Responses
Molly's options for courses to study next semester are unlimited.
The storm's arrival on Friday will bring much-needed rain.
The missing notebook contained all of the teacher's information for the field trip.
Fred noted it's a poor time to plant spring flowers until after the last frost.

Fred noted it's a poor time to plant spring flowers until after the last frost.