Final answer:
The option D) 1,000,000 the most reasonable estimate. automotive field employs a significant number of people, likely more than 390,000 and less than 975,000. According to the provided information, membership in the United Auto Workers union fell from 975,000 in 1985 to approximately 390,000 by 2015.
Step-by-step explanation:
The automotive field employs a significant number of people. According to the provided information, membership in the United Auto Workers union fell from 975,000 in 1985 to approximately 390,000 by 2015. While this represents a decline in union membership, it is likely that there are still additional employees in the automotive industry who are not part of the union.
The option D) 1,000,000 the most reasonable estimate. automotive field employs a significant number of people, likely more than 390,000 and less than 975,000. According to the provided information, membership in the United Auto Workers union fell from 975,000 in 1985 to approximately 390,000 by 2015. Therefore, it can be inferred that the number of people employed in the automotive field is likely higher than 390,000 but less than 975,000, making option D) 1,000,000 the most reasonable estimate.