Carol is giving a process speech about various gardening techniques. She does not follow a step-by-step order but instead chooses some important elements of the process: picking fruit, preparing the soil, watering plants, and buying seeds. Carol's speech uses Topical organization.
There are so many types of gardening such as butterfly garden, bird garden, wildlife garden, rose garden, water garden and many more.
There are so many types of gardening techniques such as Companion planting, Hydroponics, Organic Horticulture, Keyhole garden, Aquaponics, Square foot gardening and many more.
Hence, the correct answer is Topical Organization.
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