Multi-choice problem: Continue writing the next sentence in this paragraph:

How to store eggs
Leave the eggs in their original carton.
The packaging that your eggs come in when you first buy them is also the best place for them to remain while in storage. The composite material of the carton prevents the eggshells from absorbing odors from the other items in the refrigerator.

Choices: a. Check the temperature of the egg carton daily. Check to see how warm it is in the middle of the day. b. So throw them into the freezer before you place the eggs in a separate container or subchill them. If you buy shells from a craft store, they generally cost between $25 and $100 usd. c. It is perfect for refrigerator-dried eggs. Never include polypropylene, zinc, and aluminum. d. It also serves to keep them safely spaced and covered so that they won't be cracked or crushed. Built-in refrigerator egg compartments often require you to dump all your eggs in unprotected, which can lead to big messes and wasted eggs.
d.