Final answer:
The best way to emphasize the difficulty of incremental travel in the given sentence is to restructure it to start with the effort of bringing robust animals followed by the limited progress made, which is, 'Even though we brought the best oxen and horses we had on the farm to pull our wagons, we often traveled only about ten miles a day.'
Step-by-step explanation:
The question asks for the best way to revise the syntax of a sentence from a narrative to emphasize the difficulty of incremental travel. This involves rearranging the sentence structure to highlight the contrast between the effort made and the limited progress achieved on a daily basis by the emigrants. Among the options given, the sentence that best emphasizes the arduous nature of the travel while still carrying strong animals is, 'Even though we brought the best oxen and horses we had on the farm to pull our wagons, we often traveled only about ten miles a day.' This sentence revision places emphasis on the struggle of the journey, despite having strong animals, by leading with the effort made, and concluding with the relatively small distance covered as a result of that effort.