Answer: Forestalling
Explanation: When one takes a quick action in other to avoid an impending or negative reaction. The action or step taken is to FORESTALL the impending reaction. In the context above, the inconvenience experienced in the process of using the trimming machine as it requires using both hand simultaneously will most certainly create a negative thought or opinion as regards the design and working principle of the machine. However, a counter view is the assurance and protection it offers during operation of the machine. The counterview was used TO FORESTALL the objection raised as a result of the inconvenience experienced while using the trimming machine.