One of my primary objectives is to form the tools so that the tools themselves shall fashion the work and give to every part its just proportions, which once accomplished, will give exceptional uniformity to the whole. —letter from eli whitney to secretary of the treasury oliver wolcott, july 30, 1799 what was made possible after eli whitney accomplished the objective described in this excerpt? a. manufacturing goods with interchangeable parts b. growing crops using fewer workers c. lighting homes with electricity d. traveling on steam-powered vehicles