Concept:Difficult tasks become easier and faster when modern tools and scientific methods are used.Solution:In a modern automobile mechanic shop, difficult tasks are done more easily and faster because of modern machines, equipment, and improved techniques.These are products of modern science and technology.Capital, a small workload, or educated labour can help, but the key reason for the speed and ease in a modern shop is the use of modern science and technology.Answer:Option D (through the use of modern science and technology)