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

How to hold a guinea pig 
Leave your guinea pig completely alone for the first day or two. 
Cover the cage with a light blanket that still lets in light. Your guinea pig will feel safer and more secure.

Options:
 +Waiting too long can lead to behavioral problems or, even more easily, unwanted behavior. Make sure your guinea pig is alone when she begins introducing new pets.
 +After that, you can move on to introducing yourself. Let the guinea pig get used to you.
 +As he grows older, you need to spend time with him. Try to give your guinea pig as little alone time as possible.
 +Keep the cage covered for at least 24 hours so that it is not safe to touch. If your guinea pig bites during this initial stay, do not try to treat it.
After that, you can move on to introducing yourself. Let the guinea pig get used to you.