Select from: A). You can research gardening suppliers and look for online suppliers. Be careful: you don't want to buy unlicensed plants as it can lead to testing for pests and diseases.; B). In other words, they can't vouch for the quality of their plants. Often, they don't offer refunds for plants, so it's a risk.; C). If you live in the united states, visit a city nursery and ask them if they have listings for houseplants grown in that city. Check their website (www.arctust), and look for listings for plants sold in the area.; D). The best plants are the ones that you plant yourself. Vary often, though-find a wide variety, sell from many suppliers (or sellers of plants from different suppliers).;Choose from options above and answer: What most naturally follows?

How to grow houseplants
Go to a reputable plant supplier.
A nursery or a dedicated garden store will give you quality plants, and you can pick up knowledge from the experts. You can buy plants at a home improvement stores or grocery stores, but usually they don't directly source their plant products.
Answer:
B).