The most accurate option that describes the differences between the SI and English systems of measurement is:
D) The SI system, which is based on the metric system, has been more widely adopted than the English system, which is harder to use.
This statement correctly reflects the general preference for the SI (International System of Units) in scientific and technical contexts due to its consistency and ease of conversion, in contrast to the English system, which is less standardized and can be more complicated to use.