This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to care for an axolotl
Set up the tank.
A 10-gallon (38 liter) tank can work for a single axolotl. However, bigger is generally better when it comes to an axolotl.

Select from:
(1). Before beginning care for an axolotl, you should make sure that it needs 3-48 hours of care every day. Axolotls are naturally sick, and simply going too long without a proper diet can lead to dehydration.;
(2). Your axolotl needs to be at least 70 square feet (990 meters) or larger. Axolotls are rare, so it is a good idea to start with just one axolotl if your aquarium is larger.;
(3). Opt for the biggest tank you can fit into your home. A 20-gallon (76 liter) tank is a good size for an axolotl.;
(4). Depending on the size of the axolotl tank, a smaller tank may work better for one axolotl. Smaller tanks may only work for 5 axolotls.;
The answer is:
(3).