Which control option uses hand tools and handheld devices such as string trimmers and mowers?

• A. Manual Control
• B. Mechanical Control
• C. Chemical Control
• D. Biological Control

Answer: (A)

Manual control is about doing the work directly with your hands or with tools you hold, guided by you as the operator. In right-of-way work, using hand tools and handheld devices like string trimmers and mowers fits this approach because you physically control and perform the cutting or trimming. The machinery involved is operated by the person, but the emphasis is on direct hand-held tools rather than larger equipment or chemical or biological methods. Mechanical control, in contrast, would use bigger machines to do the job, chemical control relies on herbicides, and biological control uses living organisms to manage vegetation.