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

How to protect your houseplants from pets
Purchase sturdy plant stands for your houseplants.
If you are worried about your pets eating your houseplants, you can place the pots on tall plant stands. These decorative stands are an attractive way to display houseplants, and they can keep your plants out of your pet's reach.

Options: + The only advantage of a tall plant stand is that you can fill the upright space in the pots with fill to keep the plants from tipping over. Pet stands come in a variety of sizes and colors, and can accommodate dozens of plants.. + When you purchase these items, make sure the stand is tall enough for your plants to reach. If your plants are short and flimsy, though, you will not be able to live up to it.. + Options include copper or tin stands, but brick stands are less inexpensive, and can often be purchased at your local gardening center. They are also prone to cracking under the pressure of the cover.. + Unfortunately, these stands can still be overturned by aggressive or energetic pets. Plant stands are a good solution to keep small pets, such as guinea pigs, away from your plants..
The answer is:
Unfortunately, these stands can still be overturned by aggressive or energetic pets. Plant stands are a good solution to keep small pets, such as guinea pigs, away from your plants.